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Leitfossilien : ein Hilfsbuch zum Bestimmen von Versteinerungen bei geologischen Arbeiten in der Sammlung und im Felde - Dacqué, Edgar, 1878 -1945 (Verlag von Gebrüder Borntraeger, 1908)

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Magyar botanikai lapok = Ungarische botanische Blätter - Degen, Árpád von, 1866 -1934 (Müller Karoly Könyvnyomdaja aja, 1909)

Magyar botanikai lapok = Ungarische botanische Blätter - Degen, Árpád von, 1866 -1934 (Müller Karoly Könyvnyomdaja aja, 1913)

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Malayan fern allies. Handbook to the determination of the fern allies of the Malayan islands (incl. those of the Malay peninsula, the Philippines and New Guinea) - Alderwerelt van Rosenburgh, C. R. W. K. van (Cornelis Rugier Willem Karel), 1863 -1936 (Landsdrukkerij, 1915)

Malayan ferns. Handbook to the determination of the ferns of The Malayan islands (incl. those of the Malay Peninsula, the Philippines and New Guinea) - Alderwerelt van Rosenburgh, C. R. W. K. van (Cornelis Rugier Willem Karel), 1863 -1936 (Landsdrukkerij, 1908)

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A manual of poisonous plants : chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (Torch Press, 1910)

A manual of poisonous plants : chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (The Torch Press, 1911)

A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (The Torch Press, 1911)

A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (The Torch press, 1911)

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Manual of the flora of the northern states and Canada - Britton, Nathaniel Lord, 1859 -1934 (Holt, 1905)

Manual of the flora of the northern states and Canada - Britton, Nathaniel Lord, 1859 -1934 (H. Holt, 1907)

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Memorie della Reale accademia delle scienze di Torino - Accademia delle scienze di Torino (Stamperia reale, 1914)

Methods in plant histology - Chamberlain, Charles Joseph, 1863 -1943 (The University of Chicago press, 1924)

Methods in plant histology - Chamberlain, Charles Joseph, 1863 -1943 (The University of Chicago Press, 1915)

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The micrographic dictionary; a guide to the examination and investigation of the structure and nature of microscopic objects - Berkeley, M. J. (Miles Joseph), 1803 -1889 (J. Van Voorst, 1883)

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