The pruning-manual, being the 18th ed., rev. and reset - Bailey, L. H. (Liberty Hyde), 1858 -1954 (The Macmillan company; [etc., etc.], 1916)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1946)

Putney's 1954 garden book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Putney Nursery, 1954)

Putney's 1955 garden book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Putney Nursery, 1955)

Quarterly summary of re-identifications, April, May, June 1961 : Change No. 5 - United States. Bureau of Plant Industry, (New Crops Research Branch, Plant Industry Station, 1960)

Quarterly summary of re-identifications, October, November, December 1961 : Summary No. 7 - United States. Bureau of Plant Industry, (New Crops Research Branch, Plant Industry Station, 1960)

Rambles in search of wild flowers, and how to distinguish them - Plues, Margaret (Journal of horticulture and cottage gardener, 1864)

Rapport sur les substances végétales et animales, fait à la commission française du jury international de l'Exposition universelle de Londres - Payen, M. (Anselme), 1795 -1871 (Imprimerie impériale, 1855)

Record of decision and Lake Havasu Field Office approved resource management plan - United States. Bureau of Land Management. (U.S. Department of the Interior, Bureau of Land Management, Lake Havasu Field Office, 2007)

Recreative Science (1860)

Recueil de l'Institut botanique (Université de Bruxelles) - Institut botanique Léo Errera. (Henri Lamertin, 1902)

Releases of beneficial organisms in the United States and territories, 1983 - United States. Agricultural Research Service. (U.S. Dept. of Agriculture, Agricultural Research Service, 1994)

Remarks on the geographical distribution of British plants : chiefly in connection with latitude, elevation, and climate - Watson, Hewett Cottrell, 1804 -1881 (Printed for Longman, Rees, Orme, Brown, Green, and Longman, 1835)

Repertorium florae Ligusticae - De Notaris, Giuseppe, 1805 -1877 (Ex Regio Typographeo, 1844)

Report - British Columbia Provincial Museum. (1917)

Report - British Columbia Provincial Museum. (Printed by W.H. Cullin, 1965)

Report - British Columbia Provincial Museum. (Printed by W.H. Cullin, 1917)

Report - British Columbia Provincial Museum. (Printed by W.H. Cullin, 1956)

Report and proceedings of the Chester Society of Natural Science, Literature and Art - Chester Society of Natural Science Literature; Art. (1898)

Report and transactions - Guernsey Society of Natural Science; Local Research. (The Society, 1890-1922, 1895)

Report / Botanical Exchange Club and Society of the British Isles - Botanical Exchange Club; Society of the British Isles. (1901)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1917)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1920)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1923)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1929)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1932)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1935)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1938)

Report for the year - British Columbia Provincial Museum - British Columbia Provincial Museum. (Printed by A. Sutton [etc.], for the Queen, 1917)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1938)

Report of the Folkestone Natural History Society - Folkestone Natural History Society. (1871)

Report of the Folkestone Natural History Society - Folkestone Natural History Society. (1956)

Report of the Proceedings of the Society / Cheltenham College Natural History Society - Cheltenham College Natural History Society. (1889)

Report of the Proceedings of the Society / Cheltenham College Natural History Society - Cheltenham College Natural History Society. (1895)

Report of the Provincial Museum of Natural History - British Columbia Provincial Museum. (Provincial Museum, King's Printer for British Columbia, 1912)

Report of the State Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, 1897)

Report of the Watson Botanical Exchange Club - Watson Botanical Exchange Club. (1929)

Reports and transactions - Cardiff Naturalists' Society. (1867)

Retail, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Princeton Nurseries, 1941)

Retail catalogue of ground cover plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hugh B. Barclay, 1930)

Retail price list : fall 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lindley Nurseries Inc, 1933)

Retail price list fall 1934 : with descriptions and pronunciations - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lindley Nurseries Inc, 1934)

Retail price list : fall 1943, spring 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Princeton Nurseries, 1943)

Revista chilena de entomología - Sociedad Chilena de Entomología. (La Universidad, 1988)

Revista del Museo de La Plata - Universidad Nacional de La Plata. (Talleres del Museo de La Plata, 1916)

Revue des sciences naturelles appliquées - Société nationale d'acclimatation de France (La Société, 1889)

Revue des sciences naturelles appliquées - Société nationale d'acclimatation de France (La Société, 1892)

Revue générale de botanique (Libraire générale de l'enseignement, 1914)

Revue horticole (Librairie agricole de la maison rustique, 1890)

Revue horticole (Librairie agricole de la maison rustique, 1891)

Revue horticole (Librairie agricole de la maison rustique, 1906)

Revue horticole (Librairie agricole de la maison rustique, 1909)

Revue horticole (Librairie agricole de la maison rustique, 1910)

Revue horticole (Librairie agricole de la maison rustique, 1915)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1996)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 2015)

Revue zoologique africaine (Hayez, 1913)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1900)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1901)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1922)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1930)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1935)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1937)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1942)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1995)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 2002)

ri ben zhi wu ming hui - Honda, Masaji 本田正次 1897 -1984 (san sheng tang)

Rivista coleotterologica italiana (Salsomaggiore, 1912)

Rivista di patologia vegetale - Istituto di patologia vegetale (Università di Milano) (Tipografia del Seminario, 1902)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1903)

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 Rose Co. [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Roberts Rose Co, 1931)

Roberts, the doorway to successful horticulture - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Roberts Rose Company, 1932)

Robinson's North Shore Gardens [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Robinson's North Shore Gardens, 1927)

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

Rocknoll's economy catalog for 1941 : 14 years of service - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rocknoll Nursery, 1941)

Die Rohstoffe des Pflanzenreiches; Versuch einer technischen Rohstofflehre des Pflanzenreiches, unter Mitwirkung von Max Bamberger [et. el.] - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1900)

Die Rohstoffe des Pflanzenreiches; Versuch einer technischen Rohstofflehre des Pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1914)

Die Rohstoffe des Pflanzenreichs : versuch einer Technischen Rohstofflehre des Pflanzenreiches - Wiesner, Julius, 1838 -1916 (W. Engelmann, 1921)

The Romance of wild flowers : a companion to the British flora - Step, Edward, 1855 -1931 (Warne, 1899)

Roses, flowering shrubs, evergreens, ornamental and shade trees, perennials, rock and bedding plants, landscape service [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lakewood Nurseries, 1927)

Roses, flowering shrubs, evergreens, ornamental and shade trees, perennials, rock and bedding plants, landscape service [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Lakewood Nurseries, 1928)

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

Roses, trees, shrubs : planting guide, season 1930 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Seed & Plant Co, 1930)

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)

Rovartani lapok : havi folyóirat különös tekintettel a hasznos és kártékony rovarokra - Magyar Entomologiai Társaság. (Magyar Entomologiai Társaság, 1906)

Roy Carter - Seedsman : wholesale list to trade only, summer list - 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Roy Carter Seedsman, 1959)

Royal gardens - Ward, Cyril, 1863 -1935 (Longmans, Green, 1912)

The rural cyclopedia, or, A general dictionary of agriculture and of the arts, sciences, instruments, and practice, necessary to the farmer, stockfarmer, gardener, forester, landsteward, farrier, &c - Wilson, John M. (John Marius) (A. Fullarton, 1850)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1932)

Sable Island, with a catalogue of its vascular plants - St. John, Harold, 1892 -1991 (Gray Herbarium of Harvard University, 1921)

Safe autumn planting : fall 1957, our 80th year. Catalog no. 160 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Kelsey Nursery Service, 1957)

Safe autumn planting : fall 1959, our 82nd year. Catalog no. 164 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Kelsey Nursery Service, 1959)

Sage notes : Idaho Native Plant Society newsletter - Idaho Native Plant Society. (Idaho Native Plant Society, Pahove Chapter, 2018)

Saier's garden magazine : a manual of rare flowers, their selection and culture. Vol. 3, no. 7 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Harry E. Saier, 1954)

Salmon-Challis National Forest noxious weed management program : final environmental impact statement - United States. Forest Service. (U.S. Forest Service, 2003)

Samen-Tauschverzeichnis des Botanschen Gartens der Universität Graz - Universität Graz. Botanischer Garten. (Verlag des Instituts für systematische Botanik der Universität Graz, 1937)

Samen- und Pflanzen-Tauschliste des botanischen Gartens der Kgl. Technischen Hochschule Stuttgart - Technische Hochschule Stuttgart. Botanischer Garten. (Technische Hochschule in Stuttgart, 1909)

Samen- und Pflanzen-Tauschliste des botanischen Gartens der Kgl. Technischen Hochschule Stuttgart - Technische Hochschule Stuttgart. Botanischer Garten. (Technische Hochschule in Stuttgart, 1907)

Samen-Verzeichnis des Botanischen Gartens der Stadt Köln am Rhein - Flora und Botanischer Garten Köln. ([Flora und Botanischer Garten Köln], 1937)

Samuel C. Moon's descriptive catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Samuel C. Moon, 1889)

Sandpoint Ranger District noxious weed control project : draft environmental impact statement - Idaho Panhandle National Forests. Sandpoint Ranger District. (Sandpoint Ranger District, 1998)

Sandpoint Ranger District noxious weed control project : final environmental impact statement - United States. Forest Service. Northern Region. (U.S. Dept. of Agriculture, Forest Service, Northern Region, 1998)

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

Schling's - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Max Schling Seedsmen, Inc, 1938)

Science - American Association for the Advancement of Science. ([s.n.], 1909)

Science-gossip (Simpkin Marshall, Hamilton, Kent & Co, 1895)

Science-gossip (Simpkin Marshall, Hamilton, Kent & Co, 1899)

The Scientific proceedings of the Royal Dublin Society - Royal Dublin Society. (The Society, 1913)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1978)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1995)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1997)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1999)