Proceedings of the Linnean Society of London - Linnean Society of London. (Published for the Linnean Society of London by Academic Press [etc.], 1912)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1915)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1916)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1969)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1982)

Proceedings of the Perthshire Society of Natural Science - Perthshire Society of Natural Science. (1880)

Proceedings of the Royal Irish Academy - Royal Irish Academy. (Royal Irish Academy, 1902)

Proceedings of the Royal Society of London Series B Containing papers of a Biological character - Royal Society (Great Britain) (Printed for the Royal Society and sold by Harrison & Sons, 1907)

Proceedings of the Royal Society of London Series B Containing papers of a Biological character - Royal Society (Great Britain) (Printed for the Royal Society and sold by Harrison & Sons, 1909)

Proceedings of the Royal Society of London Series B Containing papers of a Biological character - Royal Society (Great Britain) (Printed for the Royal Society and sold by Harrison & Sons, 1913)

Proceedings of the San Diego Society of Natural History - San Diego Society of Natural History. (San Diego Society of Natural History, 1999)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1885)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1888)

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

Prodromo della flora toscana, ossia, Catalogo metodico delle piante che nascono salvatiche in Toscana e nelle sue isole, o che vi sono estesamente coltivate, con la indicazione dei luoghi nei quali si trovano, del tempo della loro fioritura e fruttificazione, dei loro nomi volgari ed usi - Caruel, Teodoro, 1830 -1898 (Coi tipi di F. Le Monnier, 1860)

Prodromus einer Flora des Kronlandes Salzburg und dessen angränzenden Ländertheilen ... - Hinterhuber, Julius, 1810 -1880 (Druck der Oberer'schen Buchdr, 1851)

Prodromus florae argentoratensis - Spielmann, Jacob Reinbold, 1722 -1783 (Apud J.G. Bauerum, 1766)

Prodromus florae batavae; nieuwe lijst der Nederlandsche phanerogamen en vaatkryptogamen - Nederlandsche Botanische Vereeniging (F.E. Macdonald, 1901)

Prodromus florae Eystettensis. Versuch einer systematischen Characteristik der in der näheren und ferneren Umgebung Eichstätt's wildwachsenden Gefässpflanzen - Hoffmann, Philipp. (Brönner, 1870)

Prodromus florae Hispanicae :seu Synopsis methodica omnium plantarum in Hispania, sponte nascentium vel frequentius cultarum quae innotuerunt - Willkomm, Moritz, 1821 -1895 (E. Schweizerbart, 1870)

Prodromus florae hispanicae, seu synopsis methodica omnium plantarum in Hispania - Willkomm, Moritz, 1821 -1895 (E. Schweizerbart, 1870)

Prodromus florae Monasteriensis Westphalorum Phanerogamia - Bönninghausen, Clemens Maria Franz von, 1785 -1864 (F. Regensberg, 1824)

Prodromus florae Novae Hollandiae et Insulae Van-Diemen : exhibens characteres plantarum - Brown, Robert, 1773 -1858 (Sumtibus L. Schrag, 1827)

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)

Prof. dr. Thom©♭'s Flora von Deutschland, ©sterreich und der Schweiz in wort und bild f©ơr schule und haus - Thomé, Otto W. (Otto Wilhelm), 1840 -1925 (F. E. K©œhler, 1886)

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 (1889)

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 (1905)

Progressus rei botanicae = Fortschritte der Botanik = Progrès de la botanique = Progress of botany - Association internationale des botanistes. (G. Fischer, 1909)

pu yang zhi wu zhi - Zhang, Junpu, Wu Hongchen, Zhu Xuewen & Ma Yipin (zhong guo ke xue ji shu chu ban she, 1996)

Publication. Field Museum of Natural History Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1923)

Publication. Field Museum of Natural History Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1971)

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, 1940)

Pudor's annual, 1931 : plants, seeds, bulbs : a book for garden lovers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pudor's, Inc, 1931)

Pudor's annual, 1932 : plants, seeds, bulbs : a book for garden lovers - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pudor's, Inc, 1932)

Pudor's annual, 1933 : plants, seeds, bulbs - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Pudor's, Inc, 1933)

Pugillus plantarum imprimis Hispanicarum, quas in itinere 1851-52 - Lange, Joh., 1818 -1898 (B. Luno, 1860)

Quarterly Journal of Science, Literature and the Arts - Royal Institution of Great Britain. (1829)

The Quarterly review of biology - American Society of Naturalists. (Published by the Stony Brook Foundation, Inc. for the State University of New York at Stony Brook, 1928)

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)

Queensland Agricultural Journal - Queensland. Department of Agriculture; Stock. (Queensland Dept. of Primary Industries, 1908)

Radiation biology - Hollaender, Alexander, 1898 - (McGraw-Hill, 1954)

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

Rambles on the Riviera - Strasburger, Eduard, 1844 -1912 (C. Scribner's Sons, 1906)

Range plants of Arizona and New Mexico : names, symbols and notations - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S.D.A, 1958)

Rapports de l'air avec les êtres organisés, ou, Traités de l'action du poumon et de la peau des animaux sur l'air, comme de celle des plantes sur ce fluide - Spallanzani, Lazzaro, 1729 -1799 (Chez J.J. Paschoud, 1807)

Rare plants and seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Rose Side Gardens, 1930)

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

Raupenkalender, oder systematisches Verzeichniss aller Raupen so in Deutschland bekant sind - Schott, J. J. (P. H. Guilhauman, 1829)

Raupenkalender oder Systematisches Verzeichniss aller Raupen, welche in Deutschland bekannt sind - Schott, J. J. (P.H. Guilhauman, 1830)

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)

Révision des champignons, tant supérieurs qu'inférieurs trouvés jusqu'à ce jour dans les Pays-Bas - Oudemans, C. A. J. A. (Cornelis Antoon Jan Abraham), 1825 -1906 (J. Mller, 1892)

Reading Naturalist. Reading - Reading Natural History Society.

Real Sociedad Española de Historia Natural. Tomo extraordinario publicado con motivo del 50. aniversario de su fundación, 1921 - Sociedad Española de Historia Natural. (Museo Nacional de Ciencias Naturales, 1921)

The reason why. A careful collection of many hundreds of reasons for things which, though generally believed, are imperfectly understood - Philp, Robert Kemp, 1819 -1882 (Houlston and Wright, 1862)

Recent advances in cytology - Darlington, C. D. (Cyril Dean), 1903 - (P. Blakiston's son & co., inc, 1937)

Records of the Botanical Survey of India - Botanical Survey of India. (Office of Supt. of Govt. Print., India, 1919)

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)

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)

Reise, nach den spanischen Ländern in Europa und America in den Jahren 1751-bis 1756, nebst Beobachtungen und Anmerkungen über die merkwürdigen Genwächse - Linné, Carl von, 1707 -1778 (G. A. Lange, 1766)