Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1928)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1932)

Prodrome de la flore Belge - De Wildeman, Emile 1866 -1947 (Alfred Castaigne, 1899)

Prodrome de la flore belge - Wildeman, E. de (Emile), 1866 -1947 (A. Castaigne, 1898)

Prodromus monographiae scitaminearum :additis nonnullis de phytographia, de monocotyleis et orchideis - Academia Caesarea Scientiarum. (Typis Academiae Caesareae Scientiarum, 1862)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1846)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1873)

Prodromus systematis naturalis regni vegetabilis, sive, Enumeratio contracta ordinum generum specierumque plantarum huc usque cognitarium, juxta methodi naturalis, normas digesta - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus Sociorum Treuttel et Würtz, 1842)

Prof. dr. Thomé's Flora von Deutschland, Österreich und der Schweiz, in wort und bild, für schule und haus ... mit ... - Migula, W. (Walter), 1863 -1938 (1904)

Prof. dr. Thomé's Flora von Deutschland, Österreich und der Schweiz, in wort und bild, für schule und haus ... mit ... - Migula, W. (Walter), 1863 -1938 (1913)

Progressus rei botanicae = Fortschritte der Botanik = Progrès de la botanique = Progress of botany - Association internationale des botanistes. (G. Fischer, 1907)

Protected Areas of the World: a review of national systems. Vol 3: Afrotropical (1992)

Protecting Nature: regional reviews of protected areas - McNeely, J.A. (IUCN, 1994)

Psst! Santa give orchids to those special friends - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Fennell Orchid Company, 1955)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1893)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1891)

Pteridophyta und Anthophyta - Wettstein, Richard, Ritter von Westersheim, 1863 -1931 (K.K. Hof- und Staatsdruckerei, 1908)

Publication. Field Columbian Museum. Botanical series - Field Columbian Museum. (Field Columbian Museum, 1900)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1930)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1936)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1937)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1938)

Quality orchids at present day prices - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Armacost & Royston, Inc, 1934)

Quality orchids : since 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (George E. Baldwin, Inc, 1956)

Quality orchids : since 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (George E. Baldwin, Inc, 1955)

Quality orchids : since 1906 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (George E. Baldwin, Inc, 1954)

The Quarterly journal of the Geological Society of London - Geological Society of America. (1875)

Queensland Agricultural Journal - Queensland. Department of Agriculture; Stock. (Queensland Dept. of Primary Industries, 1919)

Rad - Jugoslavenska akademija znanosti i umjetnosti. Razred za prirodne nauke. (Jugoslavenska akademija znanosti i umjetnosti, 1872)

Die Raupen der gross-schmetterlinge Europas - Hofmann, Ernst, 1837 -1892 (Verlag der C. Hoffmann, 1893)

Répertoire de couleurs pour aider à la détermination des couleurs des fleurs, des feuillages et des fruits - Dauthenay, Henri. (Impr. Oberthur, 1905)

Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1913)

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

Recueil des travaux botaniques néerlandais - Koninklijke Nederlandse Botanische Vereniging. (Société botanique néerlandaise, 1904)

The Red spruce : its growth and management (U.S. Dept. of Agriculture, 1917)

Refugium botanicum : or figures and descriptions from living specimens, of little known or new plants of botanical interest - Baker, John Gilbert, 1834 -1920 (J. van Voorst, 1872)

Regni vegetabilis systema naturale, sive Ordines, genera et species plantarum secundum methodi naturalis normas digestarum et descriptarum - Candolle, Augustin Pyramus de, 1778 -1841 (sumptibus sociorum Treuttel et Würtz, 1821)

Reichenbachia :Orchids illustrated and described - Sander, F. 1847 -1920 (F. Sander & Co., Orchid growers & importers;H. Sotheran & Co.;I. Forstermann, [etc., etc.], 1888)

Reichenbachia :Orchids illustrated and described - Sander, F. 1847 -1920 (F. Sander & Co., Orchid growers & importers;H. Sotheran & Co.;I. Forstermann, [etc., etc.], 1890)

Reichenbachia :orchids illustrated and described - Sander, F. 1847 -1920 (F. Sander, 1892)

Reise der österreichischen Fregatte Novara um die Erde in den Jahren 1857, 1858, 1859 unter den Befehlen des Commodore B. von Wüllerstorf-Urbair - Österreichische Akademie der Wissenschaften. (Kaiserlich-Königliche Hof- und Staatsdruckerei; in Commission bei K. Gerold's Sohn, 1864)

Rendiconti delle Tornate dell'Accademia Pontaniana - Accademia Pontaniana. (1853)

Répertoire des noms génériques mentionnés dans l'Index kewensis et ses quinze premiers suppléments = Guide to the generic names appearing in the Index Kewensis and its fifteen supplements = Repertorio de los nombres genericos enumerados en el Index Kewensis y sus quince suplementos = Repertorium der im Index Kewensis und seinen fuenfzehn ersten Supplementen erwaehnten Gattungsnamen - Rouleau, Ernest 1916 -1991 (Châtelain, 1981)

Repertorium annuum literaturae botanicae periodicae - Bemmelen, J. A. van. (Erven Loosjes, 1873)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1842)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1845)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1846)

Repertorium entomologicum - Deutsche Entomologische Gesellschaft. (Friedländer & Sohn, 1924)

Repertorium specierum novarum regni vegetabilis. Beihefte (Verlag des Repertoriums, 1919)

Repertorium specierum novarum regni vegetabilis. Beihefte (Verlag des Repertoriums, 1911)

Repertorium specierum novarum regni vegetabilis. Beihefte (Verlag des Repertoriums, 1923)

Repertorium specierum novarum regni vegetabilis. Beihefte (Verlag des Repertoriums, 1925)

Repertorium specierum novarum regni vegetabilis (Selbstverlag des Herausgebers, 1920)

Report - New York (State). Board of General Managers of the Exhibit of the State of New York at the World's Columbian Exposition. (J. B. Lyon, 1894)

Report / Botanical Society and Exchange Club of the British Isles - Botanical Society; Exchange Club of the British Isles. (1926)

Report of Special joint committee to investigate the fish and game commissioner, to the Forty-sixth General assembly, 1911 - White, Benjamin L., 1868 - (The Hugh Stephens printing company, 1911)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1937)

Report of the proceedings of the ... Entomological Meeting (Superintendent government printing, India, 1920)

Report of the proceedings of the ... Entomological meeting - Fletcher, T. B. (Thomas Bainbrigge), 1878 -1950 (Superintendent government printing, India, 1919)

Report of the Third International Conference 1906 on Genetics : hybridisation (the cross-breeding of genera or species), the cross-breeding of varieties, and general plant-breeding - Royal Horticultural Society (Great Britain) (Royal Horticultural Society, 1907)

Report of work of the Experiment Station of the Hawaiian Sugar Planters' Association. Division of Entomology bulletin - Hawaiian Sugar Planters' Association. Division of Entomology. (Hawaiian Sugar Planters' Association, 1909)

Resource management report - Ontario. Fish; Wildlife Branch.

Resultate der Wissenschaftlichen Erforschung des Balatonsees - Hungary. Földmm̋uvelésügyi Minisztérium. (E. Hölzel, 1897)

Retail - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. ([Exotic Plant Company], 1952)

Retail price list : 1924 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Elmer D. Smith & Co, 1924)

Retail price list, 1926 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Elmer D. Smith & Co, 1926)

Retail price list : 1927 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Elmer D. Smith & Co, 1927)

Retail price list : 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Elmer D. Smith & Co, 1928)

Retail price list of botanicals : 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Moore's Orchids, 1959)

Retail price list : season 1941-1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Goldsboro Nursery, 1941)

Return / British Museum - British Museum (Natural History) (British Museum, 1906)

Reuter's seeds : fall & winter 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reuter Seed Company, 1953)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1914)

The Review of applied entomology. Series A, Agricultural - C.A.B. International. Bureau of Crop Protection (Commonwealth Agricultural Bureaux, etc, 1920)

Review of the insecticidal uses of rotenone and rotenoids from derris, lonchocarpus (cube and timbo), tephrosia and related plants. Part VII, Lepidoptera - Roark, R. C. (Ruric Creegan) (United States Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1944)

Revista de la Facultad de Letras y Ciencias - Universidad de La Habana. Facultad de Letras y Ciencias. (Universidad de La Habana, 1905)

Revue de botanique; bulletin mensuel de la Société Française de Botanique - Société française de botanique. (Au secrétariat de la Société, 1888)

Revue horticole (Librairie agricole de la maison rustique, 1858)

Revue horticole (Librairie agricole de la maison rustique, 1873)

Revue horticole (Librairie agricole de la maison rustique, 1874)

Revue horticole (Librairie agricole de la maison rustique, 1886)

Revue horticole (Librairie agricole de la maison rustique, 1893)

Revue horticole (Librairie agricole de la maison rustique, 1896)

Revue horticole (Librairie agricole de la maison rustique, 1897)

Revue horticole (Librairie agricole de la maison rustique, 1899)

Revue horticole (Librairie agricole de la maison rustique, 1901)

Reynolds Gardens, "for the flower hobbyist", Armonk, New York - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reynolds Gardens, 1957)

Reynolds Gardens, "one or more of each variety", Armonk, New York - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reynolds Gardens, 1956)

Reynolds Gardens, "one or more of each variety", Armonk, New York - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Reynolds Gardens, 1955)

Rheinisches Jahrbuch für Gartenkunde und Botanik (E. Strauss, 1883)

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

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

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1953)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1972)

Rhodora - Robinson, Benjamin Lincoln, 1864 -1935 (New England Botanical Club [etc.], 1976)

Richard Diener, Oxnard, California : 1932 catalogue - Diener, Richard. (Richard Diener, 1932)

Richard Diener, Oxnard, California : 1933 catalogue - Diener, Richard. (Richard Diener, 1933)

Richard Diener, Oxnard, California : 1934 catalogue - Diener, Richard. (Richard Diener, 1934)

Richard Frotscher's almanac and garden manual for the southern states - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (R. Frotscher, 1889)

Richardiana (Tropicalia, 2002)

Richardiana (Tropicalia, 2001)

Richardiana (Tropicalia, 2003)