Opera e periodicis collata - Vries, Hugo de, 1848 -1935 (A. Oosthoek, 1918)

Orchard & garden book, 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1944)

Orchard & garden book, 1945 - Roeding, George Christian, 1868 -1928 (California Nursery Company, 1945)

Orchard & garden book, 1946 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1946)

Orchard & garden book, 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1947)

Orchard and garden book : 1865-1950, 85th year - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Seed Company, 1950)

Orchard and garden book, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1936)

The Orchid review (Orchid Review ltd.], 1906)

The Orchid review (Orchid Review ltd.], 1917)

The Orchid review (Orchid Review ltd.], 1918)

The Orchid review (Orchid Review ltd.], 1923)

Oréades - Instituto de Ciências Biológicas da UFMG. Departamento de Botânica. (Departamento de Botânica, U.F.M.G, 1981)

Organic materia medica : including the standard remedies of the leading pharmacopoeas as well as those articles of the newer materia medica ... and of the preparations made therefrom by Parke, Davis & Co. ... - Parke, Davis & Company ([s.n.], 1888)

Organographie vegetale ; ou, Description raisonnee des organes des plantes, pour servir de suite et de developpement a la theorie elementaire de la botanique, et d'introduction a la physiologie vegetale et a la description des familles, avec 60 planches en taille-douce - Candolle, Augustin Pyramus de, 1778 -1841 (Chez Deterville, libraire, rue Hautefeuille, no.8, 1827)

Organography of plants, especially of the Archegoniata and Spermaphyta - Balfour, Isaac Bayley, 1853 -1922 (Clarendon press, 1900)

Organography of plants, especially of the archegoniatae and spermaphyta - Goebel, K. (Karl), 1855 -1932 (Clar. Press, 1900)

Florist's journal (How and Parsons, 1840)

Florist's journal (How and Parsons, 1842)

Florist's journal (How and Parsons, 1844)

Florist's journal (How and Parsons, 1846)

Florist's journal (How and Parsons, 1847)

Ornamental and fruit trees and shrubs. a guide to Southern horticulture .... 1918 catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Royal Palm Nurseries, 1918)

Ornamental and fruit trees : price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Co, 1921)

Ornamental gardening for Americans. A treatise on beautifying homes, rural districts, towns, and cemeteries - Long, Elias A., 1849 -1917 (Orange Judd, 1885)

Ornamental gardening in Florida - Simpson, Charles Torrey, 1846 -1932 (The author, 1916)

Ornamental plants for low-elevation desert areas of southern California - Mathias, Mildred Esther, 1906 - (California Agricultural Experiment Station, 1955)

Ornamental trees and plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (California Nursery Company, 1908)

The ornamental trees of Hawaii - Rock, Joseph F. (Joseph Francis), 1884 -1962 (1917)

Ornamental trees, vines & shrubs : temporary price list, January 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Del Amo Nurseries, 1940)

Ornamental trees, vines and shrubs : descriptive price list, February 15, 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Del Amo Nurseries, 1938)

Ornamentals for low-elevation desert areas of southern California - Mathias, Mildred Esther, 1906 - (Division of Agricultural Sciences, University of California, 1961)

Ornithologia Svecica - Nilsson, Sven, 1787 -1883 (Apud J.H. Schubothium, 1817)

Ornithologia Svecica - Nilsson, Sven, 1787 -1883 (Apud J.H. Schubothium, 1821)

Ornithological gazetteer of Peru - Traylor, Melvin A. (Melvin Alvah), 1915 -2008 (Bird Dept., Museum of Comparative Zoology, Harvard University, 1983)

Ornithological miscellany - Mintern Bros., (Trübner and Co., Bernard Quaritch, R.H. Porter, 1877)

Ornithological science - Nihon Chogakkai (Ornithological Society of Japan, 2002)

Ornithologie européenne, ou, Catalogue descriptif, analytique et raisonné des oiseaux observés en Europe - Gerbe, Zéphirin, 1810 -1890 (J.B. Bailli, 1867)

Ornithologie européenne, ou Catalogue analytique et raisonné des oiseux observés en Europe - Degland, Côme Damien, 1787 -1856 (Roret; [etc., etc.], 1849)

Ornithologie Nordost-Afrika's : der Nilquellen- und Küsten Gebiete des Rothen Meeres und des nördlichen Somal-Landes - Heuglin, Theodor von, 1824 -1876 (T. Fischer, 1869)

Ornithologie Nordost-Afrika's : der Nilquellen- und Küsten Gebiete des Rothen Meeres und des nördlichen Somal-Landes - Heuglin, Theodor von, 1824 -1876 (T. Fischer, 1871)

Ornithologische Briefe : Bla¨tter der Erinnerung an seine Freunde - Homeyer, Eugen Ferdinand von, 1809 -1889 (T. Grieben, 1881)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1922)

Ornithologischer Atlas, oder, Naturgetreue Abbildung und Beschreibung der aussereuropäischen Vogel - Hahn, Carl Wilhelm, 1786 -1835 (C.H. Zeh'sche Buchhandlung, 1834)

Ornitologia della Papuasia e delle Molucche - Salvadori, Tommaso, 1835 -1923 (G.B. Paravia, 1880)

Ornitologia della Papuasia e delle Molucche : parte prima-[terza] - Salvadori, Tommaso, 1835 -1923 (Stamperia reale G.B. Paravia e co. di I. Vigliardi, 1880)

"Our business is growing" rare plants: choice flower seeds cacti and succulents - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Theodosia B. Shepherd Co, 1910)

Our native birds of song and beauty, being a complete history of all the songbirds, flycatchers, hummingbirds, swifts, goatsuckers, woodpeckers, kingfishers, trogons, cuckoos, and parrots, of North America - Nehrling, Henry, 1853 -1929 (G. Brumder, 1893)

Our South African flora = Ons Suid-Afrikaanse plantegroei - Compton, R. H. (Cape Times, 1900)

An outline of plant geography (The Macmillan company, 1926)

Outlines of medical botany :comprising vegetable anatomy and physiology...and a glossary of terms - Reid, Hugo. (Maclachlan, Stewart & Co, 1896)

Oxford gardens, based upon Daubeny's Popular guide to the physick garden of Oxford: with notes on the gardens of the colleges and on the University park - Gunther, R. T. (Robert Theodore), 1869 -1940 (Parker & son; [etc., etc.], 1912)

Oxford gardens. Based upon Daubeny's Popular guide to the physick garden of Oxford : with notes on the gardens of the colleges and on the University Park - Gunther, R. T. (Robert Theodore), 1869 -1940 (Parker, 1912)

Pacific science - University of Hawaii. (University Press of Hawaii, 1959)

Pacific science - University of Hawaii. (University Press of Hawaii, 1962)

Pacific science - University of Hawaii. (University Press of Hawaii, 1965)

Pacific science - University of Hawaii. (University Press of Hawaii, 1967)

Pacific science - University of Hawaii. (University Press of Hawaii, 1968)

Packaged bulbs : packaged roses - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Growers Exchange Inc, 1959)

Palaeontological memoirs and notes of H. Falconer, with a biographical sketch of the author. Vol. I, II - Falconer, Hugh, 1808 -1865 (1868)

Paleobotany and biogeography : a festschrift for Alan Graham in his 80th year - Raven, Peter H (Missouri Botanical Garden, 2014)

Palmes et couronnes de l'horticulture de Belgique - Morren, Charles, 1807 -1858 (Direction générale de la Belgique horticole [etc.], 1851)

Les palmiers; histoire iconographique, géographie–paléontologie–botanique–description–culture–emploi, etc., avec index général des noms et synonymes des espèces connues - Kerchove de Denterghem, Oswald, comte de, 1844 -1906 (J. Rothschild, 1878)

[Pamphlets on agriculture in Guam] (s.n, 1905)

Pamphlets on silviculture (1899)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1946)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1955)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1966)

Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1943)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania. (The Society, 1867)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania. (The Society, 1879)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania. (The Society, 1881)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania. (The Society, 1863)

Papers on Tipulidae - Alexander, Charles P. (Charles Paul), 1889 -1981 (s.n.], 1915)

Park and cemetery - Haight, R. J. (Rufus J.) (R.J. Haight, 1897)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1902)

Park and cemetery and landscape gardening - Haight, R. J. (Rufus J.) (R.J. Haight, 1910)

Park's 1940 flower book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1940)

Park's 1944 flower book - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1944)

Park's autumn list of bulbs, plants and seeds : autumn of 1914 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1914)

Park's floral guide - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1912)

Park's floral guide : 1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1915)

Park's floral guide for 1910 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1910)

Park's floral guide for 1913 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1913)

Park's floral magazine. Vol. LI, no. 6, June 1915 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1915)

Park's flower book for 1951 : all the best of new & old : always dependable 1868-1951 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (George W. Park Seed Co, 1951)

Park's flower book for 1952 : "all the best of new and old" - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1952)

Park's flower book for 1953 : seeds, bulbs, plants : "all the best of new and old" - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1953)

Park's flower book for 1954 : seeds, bulbs, plants : "all the best of new and old" - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1954)

Park's flower book for 1955 : "all the best of new and old" : seeds, bulbs, plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1955)

Park's flower book for 1957 : "all the best of new and old" in all the floral kingdom : seeds, bulbs, plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1957)

Park's flower book for 1958 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1958)

Park's flower book for autumn 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1959)

Park's flower book for florists, 1957 : "all the best of new and old" : wholesale price list (for florists and growers only) - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1957)

Park's flower book for Spring 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1942)

Park's flower book of choice dependable seeds : 1948 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Co, 1948)

Park's flower book of choice dependable seeds : season of 1946 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1946)

Park's flower book : season 1938, 70th anniversary - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1938)

Park's flower book : season 1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1939)

Park's flower book : spring 1943, seventy-fifth Anniversary - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1943)

Park's flower book : spring 1947 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1947)

Park's flower book : supplement 1945 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1945)

Park's illustrated flower book of choice dependable seeds : season of 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1929)

Park's illustrated flower book of choice dependable seeds : season of 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1930)

Park's illustrated flower book of choice dependable seeds : season of 1935 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Company, 1935)

Park's illustrated flower book of choice dependable seeds, season of 1933 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1933)

Park's illustrated flower book of choice dependable seeds, season of 1934 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1934)

Park's illustrated flower book of choice dependable seeds, season of 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1937)

Park's illustrated flower book of choice dependable seeds, season of 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park Seed Company, 1936)

Park’s Surprise list of choice plants, roses and bulbs : season of 1905 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. W. Park, 1905)

The parks and gardens of Paris, considered in relation to the wants of other cities and of the public and private gardens; being notes on a study of Paris gardens - Robinson, W. (William), 1838 -1935 (Macmillan and co, 1878)

The parks, promenades, & gardens of Paris, described and considered in relation to the wants of our own cities, and the public and private gardens - Robinson, W. (William), 1838 -1935 (J. Murray, 1869)

Parte práctica de botánica del caballero Cárlos Linneo, que comprehende las clases, órdenes, géneros, especies y variedades de las plantas, con sus caracteres genéricos y especificos, sinónimos mas selectos, nombres triviales, lugares donde nacen, y propriedades - Linné, Carl von, 1707 -1778 (En la Imprenta Real, 1784)

Pathologische Pflanzenanatomie. In ihren Grundzügen - Küster, Ernst, 1874 -1953 (G. Fischer, 1916)