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, 1957)

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, 1959)

Oppian, Colluthus, Tryphiodorus, with an English translation by A.W. Mair - Colluthus, of Lycopolis. (W. Heinemann, 1928)

Order Lepidoptera (Micro-lepidoptera) Sub-Div. (IV) Lepidoptera Vespertina. Family I, Tortricidae - Stephens, James Francis, 1792 -1853 (British Museum?, 1852)

Original water-colour drawings of birds and eggs - King, William (1763)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1904)

Ostasiatische decapoden - Balss, Heinrich, 1886 -1957 (1914)

P.A. Latreille scientiarum et artium instituti Gallici ... Genera crustaceorum et insectorum : secundum ordinem naturalem in familias disposita, iconibus exemplisque plurimis explicata - Latreille, P. A. (Pierre André), 1762 -1833 (Apud Amand Knig, Bibliopolam, 1809)

Palestine : the physical geography and natural history of the Holy Land - Kitto, John, 1804 -1854 (Charles Knight, 1841)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1933)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1959)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1977)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1978)

Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1943)

Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1944)

Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1952)

Pedanii Dioscoridis anazerbei De materia medica libri quinque : ad fidem cadicum manuscriptorum - Sprengel, Kurt Polycarp Joachim, 1766 -1833 (Cnobloch, C. (Carl), 1778-1834, 1829)

Personality of insects - Dixon, Royal, 1885 -1962 (Clark, 1924)

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Phegea - Vlaamse Vereniging voor Entomologie. (Vlaamse Vereniging voor Entomologie, 1975)

Philadelphia Medical and Physical Journal (1804)

Philadelphia Medical and Physical Journal (1806)

Philippi Conradi Fabricii ... Commentatio historico-physico-medica de animalibus quadrupedibus, avibus, amphibiis, piscibus et insectis Wetteraviae indigenis - Fabricius, Philipp Conrad, 1714 -1774 (Schnorrius, 1749)

The philosophy of natural history - Smellie, William, 1740 -1795 (Thomas & Tappan [etc.], 1808)

The Philosophy of Natural History - Linné, Carl von, 1707 -1778 (Printed for the heirs of Charles Elliot; and C. Elliot and T. Kay, T. Cadell, and G.G.J & J. Robinson, 1790)

The philosophy of zoology; or, A general view of the structure, functions, and classification of animals - Fleming, John, 1785 -1857 (A. Constable, 1822)

Physiologische Untersuchungen über die thierische Haushaltung der Insecten - Rengger, Johann Rudolph, 1795 -1832 (H. Laupp, 1817)

Phytoneuron (Guy L. Nesom, 2012)

Phytoneuron (Guy L. Nesom, 2013)

The pictorial museum of animated nature - Knight, Charles, 1791 -1873 (C. Cox, 1844)

The pictorial museum of animated nature ... - Knight, Charles, 1791 -1873 (C. Knight, 1844)

Piscium, serpentum, insectorum, aliorumque nonnullorum animalum nec non plantarum quarundam imagines :quas Marcus Catesby in posteriore parte splendidi illius operis quo Carolinae Floridae et Bahamensium Insularum traditit historiam naturalem eivsque appendice descripsit - Eisenberger, Nicolaus Friedrich, 1707 -1771 (Georgii Wolfgangi Knorrii, 1777)

Populäre Encyclopädie der praktischen Landwirthschaft; ein belehrendes Taschenbuch für Güterbesitzer, Wirthschaftsbeamte und Landwirthe. 3. nach dem gegenwärtigen Stande der Naturwissenschaften verb. und mit Zusätzen bereicherte Aufl. Hrsg. von Fernand Stamm - Leibitzer, Johann (G. Heckenast, 1854)

Praktische Studien an der Familie der Orchideen, nebst Kulturanweisungen und Beschreibung aller schönblühenden tropischen Orchideen - Beer, Johann Georg, 1803 -1873 (Gerold & Sohn, 1854)

A preliminary catalogue of the flora of New Jersey - Britton, Nathaniel Lord, 1859 -1934 (Office of the Survey, 1881)

Proceedings - Entomological Society of Canada (1863-1871) (Entomological Society of Ontario, 1895)

Proceedings and transactions of the British Entomological and Natural History Society - British Entomological; Natural History Society. (British Entomological and Natural History Society, 1980)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1935)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1953)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1866)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1841)

Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge - American Philosophical Society. (American Philosophical Society, 1902)

Proceedings of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1892)

Proceedings of the Bristol Naturalists' Society - Bristol Naturalists' Society (Bristol, England) (Bristol Naturalists' Society, 1970)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1966)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1965)

Proceedings of the California Academy of Sciences, 4th series - California Academy of Sciences (California Academy of Sciences, 1975)

Proceedings of the Entomological Society of Ontario - Entomological Society of Ontario. (Entomological Society of Ontario, 1956)

Proceedings of the Entomological Society of Philadelphia - American Entomological Society. ([Printed by the Society], 1864)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1925)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1926)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1951)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1977)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1978)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1982)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1985)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1987)

Proceedings of the fourth International Congress of Zoology, Cambridge, 22-27 August, 1898 - Sedgwick, Adam, 1854 -1913 (C.J. Clay, 1899)

Proceedings of the fourth International Congress of Zoology, Cambridge, 22-27 August, 1898 (Clay, 1899)

Proceedings of the Linnean Society of London - Linnean Society of London. (Published for the Linnean Society of London by Academic Press [etc.], 1912)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1921)

Proceedings of the Linnean Society of New South Wales - Linnean Society of New South Wales. (Linnean Society of New South Wales, 1961)

Proceedings of the Malacological Society of London - Malacological Society of London (Dulau, 1902)

Proceedings of the Royal Society of Victoria - Royal Society of Victoria (Melbourne, Vic.) (The Society, 1922)

Proceedings of the Royal Society of Victoria - Royal Society of Victoria (Melbourne, Vic.) (The Society, 1923)

Proceedings of the Royal Society of Victoria. New series - Royal Society of Victoria (Melbourne, Vic.) (Stillwell and Co, 1922)

Proceedings of the Royal Society of Victoria. New series - Royal Society of Victoria (Melbourne, Vic.) (Stillwell and Co, 1923)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1919)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1922)

Proceedings of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (South London Entomological and Natural history Society, 1924)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1886)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1899)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1911)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1915)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1928)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1942)