Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2014)

Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2015)

Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2016)

Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2017)

Novapex : trimestriel de la Société belge de malacologie - Société belge de malacologie. (La Société, 2019)

Occasional papers of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1915)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1963)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1966)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1973)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1986)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1987)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 2010)

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, 1972)

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

Occasional papers on mollusks - Harvard University. Museum of Comparative Zoology. Department of Mollusks. (Dept. of Mollusks, 1997)

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)

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

On the deep and shallow water marine fauna of the Kerguelen Region of the Great Southern Ocean - Murray, John, Sir, 1841 -1914 (Robert Grant & Son, 1896)

One ecosystem : ecology and sustainability data journal (Pensoft Publishers, 2019)

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, 1945)

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

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

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

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

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

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

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

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 (Appleton, 1916)

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 (D. Appleton, 1906)

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 (Humphrey Milford, Oxford University Press, 1929)

Palaeontographia Italica : Memorie di paleontologia - Canavari, Mario 1855 -1928 (Tip. T. Nistri, 1912)

Palaeontographia Italica : Memorie di paleontologia - Canavari, Mario 1855 -1928 (Tip. T. Nistri, 1913)

Palaeontology - Palaeontological Association (Palaeontological Association, 1981)

Palaeontology - Palaeontological Association (Palaeontological Association, 1983)

Palaeontology - Palaeontological Association (Palaeontological Association, 1988)

Palaeontology - Palaeontological Association (Palaeontological Association, 1994)

Palaeontology - Palaeontological Association (Palaeontological Association, 1997)

Palaeontology - Palaeontological Association (Palaeontological Association, 1998)

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

Paleontological research - Nihon Koseibutsu Gakkai (Palaeontological Society of Japan, 2002)

Panamic Province molluscan literature : additions and changes from ... - Skoglund, Carol (San Diego Shell Club, 2001)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania (The Society, 1890)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania (The Society, 1892)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania (The Society, 1894)

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania (The Society, 1898)