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Proceedings of the International Congress of Genetics (1906)

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Proceedings of the Pacific Coast Entomological Society - Pacific Coast Entomological Society ([The Society], 1901)

Proceedings of the Royal Horticultural Society London (Royal Horticultural Society, 1863)

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Procès-verbaux - Société Linnéenne de Bordeaux. (1895)

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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, 1828)

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, 1830)

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)

ProHort - Center for Urban Horticulture (1988)

ProHort - Center for Urban Horticulture (1989)

ProHort - Center for Urban Horticulture (1990)

Pronunciation of plant names - Garden Club of America. (Reproduced and printed by National Process Company], 1922)

Protected Landscapes: experience around the world. Prepared for the International Symposium on Protected Landscapes, Grange-over-Sands, England 5-10 October 1987 (1987)

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

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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, 1938)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1962)

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

Publications of Field Museum of Natural History. Volume XI, Botanical series [index] - Field Museum of Natural History. (Field Museum of Natural History, 1936)

Quality nursery stock : wholesale list, 1953-1954 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rich & Sons Nursery, 1953)

Quarterly Journal of Science, Literature and the Arts - Royal Institution of Great Britain. (1821)

Queensland Agricultural Journal - Queensland. Department of Agriculture; Stock. (Queensland Dept. of Primary Industries, 1926)

Répertoire des plantes utiles et des plantes vénéneuses du globe contenant la synonymie latine et française des plantes, leurs noms vulgaires français et l'indication de leurs usages ... précédé d'un traité indispensable aux personnes qui veulent herboriser, et composer des herbiers - Duchesne, E. A. (Edouard Adolphe), 1804 -1869 (J. Renouard, 1836)

Reading Naturalist. Reading - Reading Natural History Society. (1986)

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Le Règne végétal; divisé en: Traité de botanique, Flore médicale, usuelle et industrielle, Horticulture théorique et pratique, Plantes agricoles et forestières, Histoire biographique et bibliographique de la botanique - Réveil, O. (Oscar), 1821 -1865 (L. Guérin, 1870)

Reliquiae Haenkeanae, seu, Descriptiones et icones plantarum :quas in America meridionali et boreali, in insulis Philippinis et Marianis collegit Thaddaeus Haenke - Šternberg, Kašpar, Graf, 1761 -1838 (Apud J.G. Calve, 1830)

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, 1843)

Repertorium botanices systematicae - Walpers, Wilhelm Gerhard, 1816 -1853 (Sumtibus Friderici Hofmeister, 1844)

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 botanicum, oder, Versuch einer systematischen Darstellung der neuesten Leistungen im ganzen Umfange der Pflanzenkunde - Dierbach, Johann Heinrich, 1788 -1845 (Meyersche Hof-Buchh, 1831)

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

Repertorium specierum novarum regni vegetabilis. Beihefte (Verlag des Repertoriums, 1922)

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

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 on the scientific results of the voyage of H.M.S. Challenger during the years 1873-76 under the command of Captain George S. Nares ... and the late Captain Frank Tourle Thomson, R.N - Thomson, C. Wyville, Sir, (Charles Wyville), 1830 -1882 (Neill, 1885)

Report: <to accompany bill S. no. 241> - Linn, Lewis Fields, 1795 -1843 (Blair & Rives, printers, 1838)

Reports and papers on botany - Grisebach, A. (August), 1814 -1879 (Printed for the Ray society, 1846)

Reports of the Director ... - Dominion Experimental Farms; Stations (Canada) (Experimental Farms, 1915)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1903)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1914)

Reports of the Princeton University expeditions to Patagonia, 1896-1899. Volume VIII - Hatcher, J. B. (John Bell), 1861 -1904 (The University, 1903)

Reports of the Princeton University Expeditions to Patagonia, 1896-1899. J. B. Hatcher in charge - Princeton University Expeditions to Patagonia 1896 -1899 (The University, 1901)

Respuesta para desengaño del público á la impugnacion que ha divulgado prematuramente el presbítero don Josef Antonio Cavanilles, : contra el Pródromo de la Flora del Perú, é insinuacion de algunos de los reparos que ofrecen sus obras botánicas - Ruiz, Hipólito, 1754 -1816 (En la imprenta de la viuda é hijo de Marin, 1796)

Résultats du voyage du S.Y. Belgica en 1897-1898-1899 : sous le commandement de A. de Gerlache de Gomery. Rapports scientifiques publiés aux frais du gouvernement belge, sous la direction de la Commission de la Belgica - Belgica (Ship) (Impr. J.E. Buschmann, 1905)

Retail list and wholesale list : shrubs, trees, vines, ferns, 1939-1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1939)

Retail list : shrubs and trees, vines and perennials, 1938-1939 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1938)

Retail list : shrubs, trees, vines, perennials, 1937-1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tuttle Bros. Nurseries, 1937)

Retail price list : 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Van Lindley Nursery Company, 1923)

Retail price list : 1925-26 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Russellville Nursery Co, 1925)

Retail price list, 1930 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Tennyson Nursery Co, 1930)

Retail price list, 1937 : shrubs, trees, vines, palms, ferns, bedding plants, flowering plants and garden supplies - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Edward H. Rust, 1937)

Retail price list, fall 1931 spring 1932 : specialties for landscaping - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Menderson Nurseries, 1931)

Retail price list : January 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Malmo Nurseries, 1959)

Retail trade catalogue : special Southern landscape plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jungle Gardens Incorporated, 1927)

Revised price list. No. 32 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J.B. Pilkington, 1930)

Revisio generum plantarum vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum, mit erläuterungen - Kuntze, Otto, 1843 -1907 (A. Felix [etc., etc.], 1891)

Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum ... - Kuntze, Otto, 1843 -1907 (A. Felix [etc.], 1891)

Revisio generum plantarum:vascularium omnium atque cellularium multarum secundum leges nomenclaturae internationales cum enumeratione plantarum exoticarum in itinere mundi collectarum ... - Kuntze, Otto, 1843 -1907 (A. Felix [etc.], 1898)

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Revista chilena de historia natural - Museo de Historia Natural de Valparaíso (Valparaíso, Chile) (Litografia e Impr. Industrial (F. Peters), 1916)

Revista chilena de historia natural - Museo de Historia Natural de Valparaíso (Valparaíso, Chile) (Litografia e Impr. Industrial (F. Peters), 1921)

Revista de la Facultad de Agronomía y Veterinaria, La Plata (La Facultad, 1897)

Revue botanique :recueil mensuel ... - Duchartre, Pierre Etienne Simon, 1811 -1894 (A. Franck, 1846)

Revue des sciences naturelles de l'ouest - Institut international de bibliographie scientifique. (Revue des sciences naturelles de l'ouest, 1891)

Revue horticole (Librairie agricole de la maison rustique, 1851)

Revue horticole (Librairie agricole de la maison rustique, 1853)

Revue horticole (Librairie agricole de la maison rustique, 1854)

Revue horticole (Librairie agricole de la maison rustique, 1855)

Revue horticole (Librairie agricole de la maison rustique, 1860)

Revue horticole (Librairie agricole de la maison rustique, 1864)

Revue horticole (Librairie agricole de la maison rustique, 1867)

Revue horticole (Librairie agricole de la maison rustique, 1870)

Revue horticole (Librairie agricole de la maison rustique, 1872)

Revue horticole (Librairie agricole de la maison rustique, 1875)

Revue horticole (Librairie agricole de la maison rustique, 1882)

Revue horticole (Librairie agricole de la maison rustique, 1883)

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

Revue horticole (Librairie agricole de la maison rustique, 1892)

Revue horticole (Librairie agricole de la maison rustique, 1894)

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

Revue horticole (Librairie agricole de la maison rustique, 1904)

Revue horticole (Librairie agricole de la maison rustique, 1905)

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

Revue horticole (Librairie agricole de la maison rustique, 1911)

Revue horticole (Librairie agricole de la maison rustique, 1916)

Revue horticole (Librairie agricole de la maison rustique, 1829)

Rhododendrons, azaleas & other choice hardy ornamental trees & shrubs, autumn 1922 spring 1923 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (John Waterer, Sons & Crisp, Limited, 1922)

Rich's nursery catalog : 1950 40 pages of better buys - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rich & Sons Nursery, 1950)

Richardiana (Tropicalia, 2002)

Richmond Nurseries, Richmond Beach, Washington - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Richmond Nurseries, 1942)

Richmond Nursery catalog - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Richmond Nursery, 1928)

Riviera nature notes : a popular account of the more striking plants and animals of the Riviera and the Maritime Alps - Comerford Casey, G. E. (George Edward), 1846 -1912 (Labour Press limited, 1898)

Riviera nature notes / a popular account of the more striking plants and animals of the Riviera and the Maritime Alps - Comerford Casey, G. E. (George Edward), 1846 -1912 (Bernard Quaritch, 1903)

The rock garden - Jenkins, Edmund Howard, 1856 -1921 (Country life, ltd. [etc.], 1920)

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, 1948)

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