Rivista di biologia (Università di Perugia, etc, 1920)

Rivista di biologia (Università di Perugia, etc, 1921)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1892)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1888)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1894)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1906)

Roberts perennials, rock garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Roberts Rose Co, 1929)

Rochester and district; a sketch-guide to its geology, flora, & fauna - Hepworth, J. (Parrett & Neves, 1913)

Rock garden alpines, and other Colorado native plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1933)

Rock garden and alpine plants ; choice perennials, rare flowering trees and shrubs, evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wittenberg & Co, 1933)

Rock garden and alpine plants ; hardy perennials, rare flowering trees and shrubs, evergreens - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Wittenberg & Co, 1934)

Rock-garden plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (W.E. Marshall & Co., Inc, 1925)

Rock garden plants, etc., 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (F.R. Pierson, 1930)

Rock garden plants, list No. 9 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (White & Johnson Co, 1933)

Rock gardening for amateurs - Thomas, H. H. (Harry Higgott) (Cassell and company, limited, 1914)

Rock-gardens and perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hengel Bros, 1930)

Rock-gardens as they might be - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Eddy Garden Service, 1931)

Rock gardens: how to make and maintain them - Meredith, Lewis B. (Williams & Norgate, 1910)

Rock plants and iris - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Starker, 1934)

Rock plants and iris - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Starker, 1937)

Rock plants and iris - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Starker Gardens, 1936)

Rock plants and iris : 1930 descriptive list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Starker, 1930)

Rock plants and iris : 1931 descriptive list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Starker, 1931)

Rock plants and iris : 1932 descriptive list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Starker, 1932)

Rock plants and iris, 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Starker, 1933)

Rock plants and iris : descriptive list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Starker, 1929)

Rock plants, perennials, iris - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Roland K. Parker, 1932)

Rock's garden book : 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rock's Flower Gardens, 1924)

Rock's garden book : 1925 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rock's Flower Gardens, 1925)

Rockmont Nursery [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. ([D.M. Andrews, 1916)

Rocky Mountain flowers : an illustrated guide for plant-lovers and plant-users - Clements, Frederic E. (Frederic Edward), 1874 -1945 (H. W. Wilson, 1920)

Rocky mountain flowers; an illustrated guide for plantlovers and plant-users - Clements, Frederic E. (Frederic Edward), 1874 -1945 (the H.W. Wilson company, 1914)

Rocky Mountain rarities from Colorado - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1937)

Rocky Mountain rarities from Colorado - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1938)

Rocky Mountain rarities from Colorado - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Upton Gardens, 1936)

Rocky Mountain wild flower studies; an account of the ways of some plants that live in the Rocky Mountain region - Longyear, Burton Orange, 1868 - (Merchants Publishing Co, 1909)

Rocky Mountain wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.A. Camp, 1932)

Rocky Mountain wild flowers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.A. Camp, 1935)

Rocky Mountain wild flowers [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.A. Camp, 1929)

Rocky Mountain wild flowers [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.A. Camp, 1931)

Rocky Mountain wild flowers [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.A. Camp, 1930)

Rodent population densities and food habits in Arizona ponderosa pine forests - Goodwin, John G. (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1979)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1937)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1946)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1957)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1959)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1976)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 1980)

Rodriguésia: Revista do Jardim Botânico do Rio de Janeiro (Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, 2008)

Roehrs Nursery : at the sign of the tree - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Julius Roehrs Co, 1917)

Roehrs Nursery : at the sign of the tree - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Julius Roehrs Co, 1919)

Roehrs Nursery : at the sign of the tree : [catalog] - Roehrs, Julius, Company. (Julius Roehrs Co, 1917)

Die rohstoffe des pflanzenreiches; versuch einer technischen rohstofflehre des pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1903)

The romance of plant life, interesting descriptions of the strange and curious in the plant world - Elliot, G. F. Scott (George Francis Scott), 1862 -1934 (J. B. Lippincott, 1907)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1923)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1927)

Roosevelt wild life bulletin ... of the Roosevelt Life Forest Experiment Station of the New York College of Forestry at Syracuse University - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (The University, 1940)

Root development in the grassland formation, a correlation of the root systems of native vegetation and crop plants - Weaver, John E. (John Ernest),‏ ‎ 1884 -1966 (Carnegie inst. of Washington, 1920)

Rosedale Nurseries [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (S.G. Harris, 1916)

Roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1936)

Roses : also fruit trees, trees, shrubs, herbaceous and rock plants, garden seeds and bulbs : catalogue 1935-36 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Chaplin Bros. Ltd, 1935)

Roses, evergreens, perennials for autumn planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1932)

Roses, evergreens, perennials for autumn planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1931)

Roses, ornamental trees and shrubs, fruit trees, berry vines, perennial plants, garden requisites, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Sunset Nursery Co., Incorporated, 1941)

Roses, ornamental trees and shrubs, herbaceous perennials - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1935)

Roses, perennials, climbing plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1937)

Roses, perennials, shrubs and evergreens, 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1934)

Roses, perennials, shrubs and evergreens, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Bobbink & Atkins, 1936)

Roskilde-egnens flora. I, Karkryptogamer og blomsterplanter - Thomsen, Christen, 1822 -1874 (H.A. Müllers bogtr, 1874)

Rostlinnictví : cili Návod k snadnému urcení a pojmenování rostlin v Cechách, Morave a jiných zemích Rakouského mocnárství domácích - Sloboda, Daniel. (V kommissí u Fr. Rivnáce, 1852)

Round the year in the garden; a descriptive guide to the flowers of the four seasons, and to the work of each month in the flower, fruit and kitchen garden - Thomas, H. H. (Harry Higgott) (Cassell, 1916)

Round the year in the garden; a descriptive guide to the flowers of the four seasons, and to the work of each month in the flower, friut and kitchen garden - Thomas, H. H. (Harry Higgott) (Funk and Wagnalls company, 1916)

Rovartani lapok : havi folyóirat különös tekintettel a hasznos és kártékony rovarokra - Magyar Entomologiai Társaság. (Magyar Entomologiai Társaság, 1900)

The Royal Botanic Garden Edinburgh 1670-1970 - Fletcher, Harold R. (Her Majesty's Stationery Office, 1970)

Rules and regulations of Bureau of Entomology and Plant Quarantine ... Effective June 1, 1938 - United States. Bureau of Entomology; Plant Quarantine. (U.S. Govt. Print. Off, 1939)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1862)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1883)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1926)

Rust, smut, mildew & mould. An introduction to the study of microscopic fungi - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (W. H. Allen, 1902)

Rust, smut, mildew & mould : An introduction to the study of microscopic fungi - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Hardwicke and Bogue, 1878)

Rust, smut, mildew, & mould; an introduction to the study of microscopic fungi - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (Hardwicke and Bogue, 1878)

Rust, smut, mildew & mould ; an introduction to the study of microscopic fungi - Cooke, M. C. (Mordecai Cubitt), 1825 -1914 (W.H. Allen, 1898)

Ruwenzori expedition, 1934-5 ... - British Museum (Natural History) (Printed by order of the Trustees of the British Museum, 1957)

Sämereien zum Tausch aus dem grossherzoglichen botanischen Garten der Universität Rostock - Universität Rostock. Botanischer Garten. (Botanischer Garten zu Rostock, 1926)

Sämereien zum Tausch aus dem grossherzoglichen botanischen Garten der Universität Rostock - Universität Rostock. Botanischer Garten. (Botanischer Garten zu Rostock, 1927)

Sämereien zum Tausch aus dem grossherzoglichen botanischen Garten der Universität Rostock - Universität Rostock. Botanischer Garten. (Botanischer Garten zu Rostock, 1936)

Sage-grouse habitat assessment framework : a multiscale assessment tool : technical reference 6710-1 - United States. Bureau of Land Management. (U.S. Dept. of the Interior, Bureau of Land Management, 2015)

Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 1988)

Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 1992)

Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 2000)

Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 2009)

Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 2011)

Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 2016)

Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 2017)

Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 2023)

Saguaroland Bulletin - Desert Botanical Garden (Ariz.) (Arizona Cactus and Native Flora Society, 1974)

Saguaroland Bulletin - Desert Botanical Garden (Ariz.) (Arizona Cactus and Native Flora Society, 1976)

The Saier catalog of rare and popular flower seeds, vegetable and grass seeds : garden bulbs - all kinds, gardener's supplies. no. 49-7 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pioneer Seed Company, 1949)

Salzburgische Flora : oder Beschreilbung der in dem erzstifte Salzburg wildwachsenden Pflanzen, nebst Angabe ihrer Wohnorte, Blühezeiten, Dauer, Gestalt &c. iher Anwendbarkeit in der Heilkunde und Haushaltungswissenschaft, und ihrem Nutzen für Mahler, Färber, Gärber, Bienenzieher, Förster und Landwirthe - Braune, Franz Anton Alexander von, 1766 -1853 (Im Verlage der Mayr'schen Buchhandlung, 1797)

Samen-Tauschliste - Schwabe, Willmar. (Arzneipflanzen-Lehr- und Versuchsgarten des wissenschaftlichen Laboratoriums Dr. Willmar Schwabe, 1937)

Samenhandlung - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Emil Mauser, 1925)

Samenzucht, Samenhandlung, Handelsgärtnerei : Jahrgang 77, Nr. 176, Gründungsjahr 1855 / Carl Pabst - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Pabst, 1932)

Samenzucht und Samenhandlung, Handelsgärtnerei : Jubiläums-Katalog, 1930, 1855-1930, 75 Jahre / Carl Pabst - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Carl Pabst, 1930)

Sandberg, correspondence and notes, 1893 - Sandberg, John Herman, 1848 -1917 (1893)

Sandusky flora. A catalogue of the flowering plants and ferns growing without cultivation in Erie county, Ohio, and the peninsula and islands of Ottawa County - Moseley, Edwin Lincoln, 1865 -1948 (Clapper, 1899)

Sargentia :a continuation of the contributions from the Arnold Arboretum of Harvard University - Arnold Arboretum. (The Arnold Arboretum of Harvard University, 1947)

Sargentia :a continuation of the contributions from the Arnold Arboretum of Harvard University - Arnold Arboretum. (The Arnold Arboretum of Harvard University, 1949)

Schedae operis quod inscribitur Plantae Finlandiae exsiccatae e Museo Botanico Universitatis Helsingforsiensis distributae - Helsingin yliopisto. Kasvimuseo. (J. Simelii arfvingars boktr, 1907)

Schilderung der deutschen Pflanzenfamilien; vom botanisch-descriptiven und physiologisch-chemischen Standpunkte - Hoffmann, Hermann, 1819 -1891 (Wirth, 1851)

Schilderung der deutschen pflanzenfamilien vom botanisch-descriptiven und physiologischchemischen standpunkte - Hoffmann, Hermann, 1819 -1891 (Georg Friedrich Hener's Verlag, 1846)

Schlegel & Fottler Co.'s specialties for 1909 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Schlegel & Fottler Co, 1909)

Schlesiens Pflanzenwelt. Eine pflanzengeographische Schilderung der Provinz - Pax, Ferdinand, 1858 -1942 (G. Fischer, 1915)

Schling's - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Max Schling Seedsmen, Inc, 1937)

Die Schmetterlinge der Schweiz - Müller-Rutz, J. (K.J. Wyss, 1911)

Die Schmetterlinge Deutschlands mit besonderer Berücksichtigung ihrer Biologie - Eckstein, Karl, 1859 -1930 (K.G. Lutz' Verlag, 1920)

Die Schmetterlinge Europas - Hofmann, Ernst, 1837 -1892 (E. Schweizerbart, 1908)

Die Schmetterlinge Europas - Hofmann, Ernst, 1837 -1892 (E. Schweizerbart, 1910)

Schönbrunn's Flora, oder, Systematisch geordnetes Verzeichniss der im kais. königl. holländisch-botanischen Hofgarten zu Schönbrunn cultivirten Gewächse - Boos, Joseph. (Im Verlag der Geistingerschen Buchhandlung, 1816)

A school flora : for the use of elementary botanical classes - Watts, W. Marshall (Longmans, Green, 1910)

Schriften der Königlichen Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Königliche Physikalisch-Ökonomische Gesellschaft zu Königsberg. (In Commission bei Gräfe und Unzer, 1866)

Schriften der Naturforschenden Gesellschaft in Danzig - Naturforschende Gesellschaft in Danzig. (Auf Kosten der Naturforschenden Gesellschaft, 1880)

Schriften der Naturforschenden Gesellschaft in Danzig - Naturforschende Gesellschaft in Danzig. (Auf Kosten der Naturforschenden Gesellschaft, 1882)

Schriften der Naturforschenden Gesellschaft in Danzig - Naturforschende Gesellschaft in Danzig. (Auf Kosten der Naturforschenden Gesellschaft, 1890)

Schriften der Naturforschenden Gesellschaft in Danzig - Naturforschende Gesellschaft in Danzig. (Auf Kosten der Naturforschenden Gesellschaft, 1904)

Schriften der Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Physikalisch-Ökonomische Gesellschaft zu Königsberg (In Commission bei Gräfe und Unzer, 1891)

Schriften der Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Physikalisch-Ökonomische Gesellschaft zu Königsberg (In Commission bei Gräfe und Unzer, 1902)

Schriften der Physikalisch-Ökonomischen Gesellschaft zu Königsberg - Physikalisch-Ökonomische Gesellschaft zu Königsberg (In Commission bei Gräfe und Unzer, 1907)

Schriften des Naturwissenschaftlichen Vereins für Schleswig-Holstein - Naturwissenschaftlicher Verein für Schleswig-Holstein. (Lipsius & Tischer, 1885)

Schriften herausgegeben von der Naturforscher-Gesellschaft bei der Universität Jurjew (Dorpat) - Universitas Jurjevensis. Naturforscher-Gesellschaft. (Druck von C. Mattiesen, 1895)

Schule der systematischen Botanik - Hallier, Ernst, 1831 -1904 (W.G. Korn, 1878)

Schulflora der Provinz Schleswig-Holstein, des Fürstentums Lübeck, sowie des Gebietes der freien Städte Hamburg und Lübeck - Knuth, Paul, 1854 -1899 (O. Lenz, 1888)