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Occasional papers on mollusks - Harvard University. Museum of Comparative Zoology. Department of Mollusks. (Dept. of Mollusks, 1958)

Occasional papers on mollusks - Harvard University. Museum of Comparative Zoology. Department of Mollusks. (Dept. of Mollusks, 1967)

Occasional papers on mollusks - Harvard University. Museum of Comparative Zoology. Department of Mollusks. (Dept. of Mollusks, 1971)

Occasional papers on mollusks - Harvard University. Museum of Comparative Zoology. Department of Mollusks. (Dept. of Mollusks, 1981)

Occasional papers on mollusks - Harvard University. Museum of Comparative Zoology. Department of Mollusks. (Dept. of Mollusks, 1974)

Occasional papers on mollusks - Harvard University. Museum of Comparative Zoology. Department of Mollusks. (Dept. of Mollusks, 1975)

Occasional papers on mollusks - Harvard University. Museum of Comparative Zoology. Department of Mollusks. (Dept. of Mollusks, 1992)

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Official lists and indexes of names and works in zoology - International Commission on Zoological Nomenclature (ICZN, 1987)

Official lists and indexes of names and works in zoology Supplement 1986-2000 - International Commission on Zoological Nomenclature (International Trust for Zoological Nomenclature, c/o Natural History Museum, 2001)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1846)

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On comparative longevity in man and the lower animals - Lankester, E. Ray Sir, (Edwin Ray), 1847 -1929 (Macmillan and co, 1870)

On intestinal respiration in annelids : with considerations on the origin and evolution of the vascular system in that group - Royal Society of Edinburgh. (Royal Society of Edinburgh?], 1913)

On the jaw and lingual membrane of North American terrestrial pulmonata - Binney, W. G. (William Greene), 1833 -1909 (Printed for the author, 1875)

On the origin of freshwater faunas: a study in evolution - Sollas, W. J. (William Johnson), 1849 -1936 (Royal Dublin Society, 1884)

Opinions and declarations rendered by the International Commission on Zoological Nomenclature - International Commission on Zoological Nomenclature (Printed by order of the International Trust for Zoological Nomenclature, 1958)

Opinions and declarations rendered by the International Commission on Zoological Nomenclature - International Commission on Zoological Nomenclature (Printed by order of the International Trust for Zoological Nomenclature, 1955)

Opinions and declarations rendered by the International Commission on Zoological Nomenclature - International Commission on Zoological Nomenclature (Printed by order of the International Trust for Zoological Nomenclature, 1956)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1969)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1970)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1977)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1979)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1980)

Opisthobranch newsletter - Long, Steven J. (S.J. Long, 1981)

The origin of the world according to revelation and science - Dawson, J. W., (John William), 1820 -1899 (Hodder and Stoughton, 1886)

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Our country's shells and how to know them : a guide to the British mollusca - Gordon, W. J. (Simpkin, Marshall, Hamilton, Kent & Co, 1901)

Our living world; an artistic edition of the Rev. J. G. Wood's Natural history of animate creation - Wood, J. G. (John George), 1827 -1889 (S. Hess, 1885)

Outlines of comparative physiology : touching the structure and development of the races of animals, living and extinct : for the use of schools and colleges - Agassiz, Louis, 1807 -1873 (H.G. Bohn, 1851)

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Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Pentland, 1899)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Appleton, 1916)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (H. Frowde and Hodder & Stoughton, 1899)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton & Co, 1892)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Young J. Pentland, 1892)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Young J. Pentland, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton & Co, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Humphrey Milford, Oxford University Press, 1929)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (H. Frowde and Hodder & Stoughton, 1921)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton, 1906)

Ovum - Thomson, Allen, 1809 -1884 ([s.n.], 1856)

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Palaeontographica (Theodor Fischer, 1846)

Palaeontographica (Theodor Fischer, 1871)

Palaeontographica (Theodor Fischer, 1887)

Palaeontographica (Theodor Fischer, 1901)

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Palæontology, invertebrate - Woods, Henry, 1868 -1952 (The University press, 1909)

Paleontological research - Nihon Koseibutsu Gakkai (Palaeontological Society of Japan, 1997)

Paleontologie und Descendenzlehre : Vortrag gehalten in der allgemeinen Sitzung der naturwissenschaftlichen Hauptgruppe der Versammlung deutscher Naturforscher und Aerzte in Hamburg, am 26 September, 1901 - Gesellschaft Deutscher Naturforscher und Ärzte. (Gustav Fischer, 1902)

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The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1982)

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Pennsylvanian (Morrowan) gastropods from the Magdelena Formation of the Hueco Mountains, Texas - Batten, Roger Lyman (American Museum of Natural History, 1995)

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