Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1953)

Proceedings of the Literary and Philosophical Society of Liverpool - Literary; Philosophical Society of Liverpool. (1856)

Proceedings of the Natural history society of Dublin for the session ... - Natural History Society of Dublin. (Printed for the Society, 1878)

Proceedings of the Natural Science Association of Staten Island - Natural Science Association of Staten Island. (The Association, 1901)

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, 1909)

The Proceedings of the Royal Society of Queensland - Royal Society of Queensland. (Royal Society of Queensland], 1884)

The Proceedings of the Royal Society of Queensland - Royal Society of Queensland. (Royal Society of Queensland], 2009)

Proceedings of the semi-centennial anniversary of the Torrey botanical club, October 18, 19 and 20, 1917 - Torrey Botanical Club. (1918)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1901)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1906)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1910)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1914)

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

Prodrome de la flore Belge - De Wildeman, Emile 1866 -1947 (Alfred Castaigne, 1898)

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

Prodromo della storia naturale generale e comparata d'Italia ... - Marmocchi, Francesco Constantino, 1805 -1858 (Società editrice fiorentina, 1844)

Prodromus florae Batavae - Nederlandsche Botanische Vereeniging, Leyden. (F.E. MacDonald, 1858)

Prodromus florae Batavae - Nederlandsche Botanische Vereeniging, Leyden. (F.E. MacDonald, 1866)

Prodromus florae Batavae - Dozy, F. (Frans), 1807 -1856 (Sumptibus Societatis, apud J. Hazenberg, 1850)

Prodromus florae neomarchicae secundum systema proprium conscriptus atque figuris XX coloratis adornatus - Rebentisch, Johann Friedrich, 1772 -1810 (Impensis F. Schüppel, 1804)

Prof. Dr. Harald O. Lenz' Ntzliche, schdliche und verdchtige Pilze - Lenz, Harald Othmar, 1799 -1870 (Thienemann, 1890)

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)

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 (1912)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1888)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1890)

A provisional host-index of the fungi of the United States - Farlow, W. G. (William Gilson), 1844 -1919 (1891)

A provisional key to the genera of Hymenomycetes (mushrooms, toadstools, etc.) - Atkinson, George Francis, 1854 -1918 (1898)

Publication. Field Columbian Museum. Botanical series - Field Columbian Museum. (Field Columbian Museum, 1896)

Publication. Field Museum of Natural History. Botanical series - Field Museum of Natural History. (Field Museum of Natural History, 1931)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1869)

Rad - Jugoslavenska akademija znanosti i umjetnosti. Razred za prirodne nauke. (Jugoslavenska akademija znanosti i umjetnosti, 1873)

Rambles in search of flowerless plants - Plues, Margaret (Journal of horticulture & cottage gardener office; [etc., etc.], 1864)

Rapid biological inventories - Field Museum of Natural History. Environmental; Conservation Programs. (Field Museum, 2003)

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.

Recueil des Travaux de la Société (d'Amateurs) des Sciences, de l'Agriculture et des Arts à Lille - Société des sciences de l'agriculture et des arts de Lille (1825)

Reduction of all the genera of plants contained in the Catalogus plantarum Americæ septentrionalis, of the late Dr. Muhlenberg, to the natural families of Mr. de Jussieu's system : For the use of the gentlemen who attended the course of elementary and philosophical botany in Philadelphia, in 1815 - Correia da Serra, José Francisco, 1750 -1823 (Published by Solomon W. Conrad, no. 87, Market Street, 1815)

Reise der o¨sterreichischen Fregatte Novara um die Erde in den Jahren 1857, 1858, 1859 unter den Befehlen des Commodore B. von Wu¨llerstorf-Urbair. Erster Band: Sporenpflanzen, Botanischer Theil (Kaiserlich-Kniglichen Hof- und Staatsdruckerei, in Commission bei K. Gerold, 1870)

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, 1870)

Reise in den äussersten Norden und Osten Sibiriens während der Jahre 1843 und 1844 mit Allerhöchster Genehmigung auf Veranstaltung der Kaiserlichen Akademie der Wissenschaften zu St. Petersburg ausgeführt und in Verbindung mit vielen Gelehrten - Imperatorskai︠a︡ akademīi︠a︡ nauk (Russia) (Buchdr. der K. Akademie der Wissenschaften : Zu haben bei Eggers, 1856)

Reisen in Britisch-Guiana in den Jahren 1840-1844 : nebst einer Fauna und Flora Guiana's nach Vorlagen von Johannes Müller, Ehrenberg, Erichson, Klotzsch, Troschel, Cabanis und Andern - Ehrenberg, Christian Gottfried, 1795 -1876 (J. J. Weber, 1847)

Relation historique du voyage aux régions équinoxiales du nouveau continent - Humboldt, Alexander von, 1769 -1859 (F. A. Brockhaus, 1900)

Reliquiae Dewevreanae ou Enumération systématique des plantes récoltées par Alfr. Dewèvre en 1895-96 dans l'Etat Indépendant du Congo - De Wildeman, Emile 1866 -1947 (1901)

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

Report & transactions - Birmingham Natural History; Microscopical Society (Birmingham, England) (Herald Press, 1880)

Report of the Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, Office of the Regents, 1868)

Report of the Botanist - New York (State). State Botanist. (James B. Lyon, State Printer, 1867)

Report of the Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, Office of the Regents, 1878)

Report of the Geological Survey of Ohio - Geological Survey of Ohio. (Nevins & Myers, state printers, 1893)

Report of the geological survey of Ohio - Geological Survey of Ohio. (Nevins & Meyers, 1893)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1904)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1910)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1911)

Report of the State Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, 1901)

Report of the State Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, 1909)

Report of the State Botanist - Peck, Charles H. (Charles Horton), 1833 -1917 (University of the State of New York, 1916)

Report of the State Entomologist on injurious and other insects of the state of New York - Felt, Ephraim Porter, 1868 -1943 (Weed, Parsons and Co.; University of the State of New York, 1917)

Report of the State Entomologist to the Regents of the University of the State of New York - University of the State of New York. (University of the State of New York], 1885)

Report on the geology, mineralogy, botany, and zoology of Massachusetts - Massachusetts. Geological Survey. (J.S. and C. Adams, 1835)

Report on the geology, mineralogy, botany, and zoology of Massachusetts : made and published by order of the government of that state : in four parts: Part I. Economical geology. Part II. T opographical geology. Part III. Scientific geology. Part IV. Catalogues of animals and plants : with a descriptive list of the specimens of rocks and minerals collected for the government : illustrated by numerous wood cuts and an atlas of plates - Massachusetts. Geological Survey. (Press of J.S. and C. Adams, 1833)

Report on the geology, mineralogy, botany, and zoology of Massachusetts - Massachusetts. Geological Survey. (Press of J.S. and C. Adams, 1833)

Report / Warwickshire Natural History & Archaeological Society - Warwickshire Natural History; Archaeological Society. (1873)