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Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1954)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1976)

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Proceedings of the section of sciences - Koninklijke Akademie van Wetenschappen (Netherlands) (Johannes Müller, 1912)

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Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1922)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1926)

Proceedings of the third USA-USSR symposium on the effects of pollutants upon aquatic ecosystems (U.S. Environmental Protection Agency, 1978)

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

Prodromus der Flora von Böhmen. Enthaltend die Beschreibungen und Verbreitungsangaben der wildwachsenden und im Freien kultivirten Gefässpflanzen des Königreiches ... - Celakovský, Ladislav Josef, 1834 -1902 (Selbstverlag des Comité's, 1867)

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)

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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 (1903)

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 (1907)

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 (1910)

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pu tong zi ran di li 普通自然地理 - Polovinkin, A. A. (Aleksandr Aleksandrovich) 1887 -1955 (dong bei jiao yu chu ban she 东北教育出版社, 1948)

pu tong zi ran di li 普通自然地理 - Zubov, S. M. (Sergeĭ Mikhaĭlovich) (shang wu yin shu guan 商务印书馆, 1959)

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

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Reading Naturalist. Reading - Reading Natural History Society. (1973)

Reading Naturalist. Reading - Reading Natural History Society. (1987)

Reading Naturalist. Reading - Reading Natural History Society. (2003)

Reading Naturalist. Reading - Reading Natural History Society. (2016)

Reading Naturalist. Reading - Reading Natural History Society. (2017)

Recent advances in microscopy; biological applications - MacBride, E. W. (Ernest William), 1866 -1940 (P. Blakiston's son & co., inc, 1931)

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A record of the doctors in botany of the University of Chicago 1897-1916, presented to John Merle Coulter, professor and head of the Department of botany, by the doctors in Botany at the quarter-centennial of the university, June 1916 - University of Chicago. (1916)

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)

Recueil des travaux botaniques néerlandais - Koninklijke Nederlandse Botanische Vereniging. (Société botanique néerlandaise, 1922)

Regeneration und transplantation - Korschelt, E. (Eugen), 1858 -1946 (G. Fischer, 1907)

Die Regulierung des Geschlechtsverhaltnisses : bei der Vermehrung der Menschen, Tiere und Pflanzen - Düsing, Karl, 1859 - (Verlag von Gustav Fischer, 1884)

Rendiconti - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (1898)

Rendiconti - Accademia nazionale dei Lincei. Classe di scienze fisiche, matematiche e naturali. (1892)

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

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Report / Botanical Exchange Club and Society of the British Isles - Botanical Exchange Club; Society of the British Isles. (1913)