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Plants of Mississippi : a list of flowering plants and ferns - Lowe, E. N. (Ephraim Noble), 1864 -1933 (Mississippi State Geological Survey, 1921)

Der Plauische Grund bei Dresden : mit Hinsicht auf Naturgeschichte und schöne Gartenkunst - Darnstedt, Johann Adolph, 1769 -1844 (In der Frauenholzischen Kunsthandlung, 1799)

Poatkowé rostlinoslowí - Presl, Jan Svatopluk, 1791 -1849 (W kommissí u Kronbergra a iwnáe, 1848)

Popular botany; the living plant from seed to fruit - Step, Edward, 1855 -1931 (H. Holt and company, 1913)

Popular field botany; containing a familiar and technical description of the plants most common to the various localities of the British Isles, adapted to the study of either the artificial or natural systems - Catlow, Agnes, 1807? -1889 (Reeve, Benham, and Reeve, 1848)

Popular field botany; containing a familiar and technical description of the plants most common to the various localities of the British Isles, adapted to the study of either the artificial or natural systems - Catlow, Agnes, 1807? -1889 (Reeve, Benham & Reeve, 1849)

A popular history of British lichens - Lindsay, W. Lauder (William Lauder), 1829 -1880 (Lovell Reeve, 1856)

A popular history of British lichens, comprising an account of their structure, reproduction, uses, distribution, and classification - Lindsay, W. Lauder (William Lauder), 1829 -1880 (L. Reeve, 1856)

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Pozsonyi Orvos-Termeszettudomanyi Egyesulet Kozlemenyei - Verein für natur- und heilkunde, Pressburg (1884)

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A practical course in botany : with especial reference to its bearings on agriculture, economics, and sanitation - Lloyd, Francis Ernest, 1868 -1947 (American Book Company, 1911)

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The principles of botany, as exemplified in the Cryptogamia. For the use of schools and colleges - Coultas, Harland, 1817 -1877 (Lindsay and Blakiston, 1853)

Principles of botany - Bergen, Joseph Y. (Joseph Young), 1851 -1917 (Ginn & company, 1906)

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

Prodromus plantarum Capensium :quas in promontorio Bonæ Spei Africes, annis 1772-1775 - Thunberg, Carl Peter, 1743 -1828 (J. Edman, 1800)

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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Protists and disease. Vegetable protists; Algae and Fungi, including Chytridiineae; various Plassomyxinae, the causes of molluscum contagiosum, smallpox, syphilis, cancer, and hydrophobia; together with the Mycetozoa and allied groups - Clarke, J. Jackson (James Jackson), 1860 -1940 (Baillière, Tindall & Cox, 1922)

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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, 1848)

Reisen nach dem Nordpolarmeer in den Jahren 1870 und 1871 - Heuglin, Theodor von, 1824 -1876 (G. Westermann, 1874)

Reliquiae aquitanicae : being contributions to the archaeology and palaeontology of Pèrigord and the adjoining provinces of Southern France - Christy, Henry, 1810 -1865 (Williams, 1875)

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

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Report of the botanical exploration of southwestern Virginia during the season of 1892 - Small, John Kunkel, 1869 -1938 (1893)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1868)

Report of the Brown-Harvard Expedition to Nachvak, Labrador, 1900 - Delabarre, Edmund Burke, 1863 - (Preston & Rounds Co, 1902)

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Report of the Commissioner of Agriculture ... - United States. Department of Agriculture. (G.P.O, 1863)

Report of the cruise of the U.S. revenue steamer Thomas Corwin, in the Arctic Ocean, 1881 - United States. Revenue-Cutter Service. (Govt. Print. Off, 1884)

Report of the general agent of education in Alaska for the year 1888-89 - Jackson, Sheldon, 1834 -1909 (Govt. Print. Off, 1891)

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Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1912)

Report of the second Norwegian Arctic Expedition in the "Fram", 1898-1902. Published by Videnskabs-selskabet i Kristiania, at the expense of the Fridjof Nansen Fund for the Advancement of Science - Norske videnskaps-akademi i Oslo. (T.O. Brøgger, 1907)

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Report of the Second Norwegian Arctic Expedition in the "Fram," 1898-1902 - Norske videnskaps-akademi i Oslo. (In commission by T.O. Brøgger, 1907)

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

Report on botanical work in Minnesota for the year 1886 - Arthur, Joseph Charles, 1850 -1942 (Pioneer Press Co, 1887)

Report on introduction of domestic reindeer into Alaska - Jackson, Sheldon, 1834 -1909 (Govt. Print. Off, 1895)

Report on introduction of domestic reindeer into Alaska - Jackson, Sheldon, 1834 -1909 (Govt. Print. Off, 1896)

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Report on the proceedings of the United States expedition to Lady Franklin Bay, Grinnell Land - Greely, A. W. (Adolphus Washington), 1844 -1935 (G.P.O, 1888)

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)

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