Petri Artedi renovati pars I. et II. [III-V] : i.e. bibliotheca et philosophia ichthyologica - Linné, Carl von, 1707 -1778 (Impensis A.F. Röse, 1793)

Petri Bellonii Cenomani De aquatilibus, libri duo cum [epsilon, iota] conibus ad viuam ipsorum effigiem, quoad eius fieri potuit, expressis - Belon, Pierre, 1517? -1564 (Apud C. Stephanum, 1553)

Pfarrer P. Blasius Hanf als Ornitholog. Dargestellt vorzüglich auf Grundlage der Schriften desselben - Schaffer, Alexander. (Im Selbstverlag der Benediktiner-Abtei, 1904)

Die Pflanzen- und Thierwelt von Deli auf der Ostküste Sumatras : naturwissenschaftliche Skizzen und Beitrage - Hagen, B. (Bernhard), 1853 -1919 (E.J. Brill, 1890)

Die Pflanzenwelt Deutschlands; Lehrbuch der Formations- biologie. Eine Darstellung der Lebensgeschichte der wildwachsenden Pflanzenvereine und der Kulturflächen - Graebner, Paul, 1871 -1933 (Quelle & Meyer, 1909)

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

Philippine birds - Du Pont, John E. (John Eleuthère), 1938 -2010 ([Delaware Museum of Natural History], 1971)

The Philosophical magazine and journal : comprehending various branches of science, the liberal and fine arts, agriculture, manufactures, and commerce (R. Taylor, 1823)

The Philosophical magazine and journal : comprehending various branches of science, the liberal and fine arts, agriculture, manufactures, and commerce (R. Taylor, 1825)

The Philosophical magazine : comprehending the various branches of science, the liberal and fine arts, geology, agriculture, manufactures and commerce (Richard Taylor and Co, 1808)

The Philosophical magazine : or Annals of chemistry, mathematics, astronomy, natural history and general science (Richard Taylor and Co, 1827)

The Philosophical magazine : or Annals of chemistry, mathematics, astronomy, natural history and general science (Richard Taylor and Co, 1831)

The Philosophical magazine : or Annals of chemistry, mathematics, astronomy, natural history and general science (Richard Taylor and Co, 1832)

The Philosophical transactions of the Royal society of London, from their commencement in 1665, in the year 1800 - Royal Society (Great Britain) (Printed by and for C. and R. Baldwin, 1809)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1704)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1777)

The philosophy of zoology, or, A general view of the structure, functions, and classification of animals - Fleming, John, 1785 -1857 (Hurst, Robinson & Co, 1822)

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

Phylogeography, species limits, phylogeny, and classification of the turacos (Aves, Musophagidae) based on mitochondrial and nuclear DNA sequences - Barrowclough, George F. (American Museum of Natural History, 2020)

Physica sacra - Scheuchzer, Johann Jakob, 1672 -1733 (Christian Ulrich Wagner], 1731)

Physiographiska Sällskapets Tidskrift - Physiographiska Sallskapet i Lund (1837)

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)

The pictorial museum of animated nature - William Clowes; Sons, (George Cox, 18 King Street, Covent Garden, 1844)

Picture of organized nature, in its spreading over the earth (Smith, 1828)

Planches coloriees des oiseaux de la Belgique et de leurs oeufs - Dubois, Ch. F. (Charles Frédéric), 1804 -1867 (C. Muquardt, 1857)

Plantarum seu stirpium historia - L'Obel, Matthias de, 1538 -1616 (Ex officina Christophori Plantini, 1576)

Plantarum, seu, Stirpium historia - L'Obel, Matthias de, 1538 -1616 (Ex officina Christophori Plantini, 1576)

Pleistocene birds of the palearctic : a catalogue - Nuttall Ornithological Club. (Nuttall Ornithological Club, 1998)

Les poissons : synonymie–description–mœurs–frai–pêche–iconographie, des espèces composant plus particulièrement la faune française - Boulart, R. (Raoul), 1849 -1901 (J. Rothschild, 1877)

Les Polynésiens : leur origine, leurs migrations, leur langage - Lesson, Pierre-Adolphe, 1805 -1888 (E. Leroux, 1884)

Popular British ornithology : containing a familiar and technical description of the birds of the British Isles - Gosse, Philip Henry, 1810 -1888 (Reeve, Benham, and Reeve, 1849)

Popular British ornithology : containing a familiar and technical description of the birds of the British Isles - Gosse, Philip Henry, 1810 -1888 (Reeve and co, 1853)

A popular handbook of the birds of the United States and Canada - Nuttall, Thomas, 1786 -1859 (Little, Brown, 1905)

A popular Handbook of the Ornithology of Eastern North America - Nuttall, Thomas, 1786 -1859 (Truslove and Hanson, 1894)

A popular history of British birds' eggs - Laishley, Richard, Rev., 1816 -1897 (L. Reeve, 1858)

Portraits of rare and curious birds, with their descriptions : from the menagery of Osterly Park, in the county of Middlesex - Hayes, W. (William), active 1775 -1800 (Printed by W. Bulmer and Co., and published for the author by R. Faulder, 1794)

Postilla - Peabody Museum of Natural History. (Peabody Museum of Natural History, 1987)

A practical handbook of British birds - Witherby, H. F. (Harry Forbes), 1873 -1944 (Witherby, 1924)

A practical handbook of British birds - Witherby, H. F. (Harry Forbes), 1873 -1944 (Witherby, 1920)

Praktische Naturgeschichte der Vögel, für Gebildete aller Stände - Reichenbach, A. B. (Anton Benedikt), 1807 -1880 (1850)

Primae lineae systematis naturæ : nexui naturali omnium evolutionique progressivae per nixus reascendentes superstructi - Gori͡aninov, Pavel Fedorovich, 1796 -1865 (Typis Karoli Krajanis, 1834)

Primo resoconto dei risultati della inchiesta ornitologica in Italia ... - Giglioli, Enrico Hillyer, 1845 -1909 (Coi tipi dei successori Le Monnier, 1889)

Prírodopis prostonárodni : cili popsání zwírat, rostlin a nerostu : wedlé tríd a rádu jejich - Stanka, Wáclawa. (W kommissi u Kronbergra a Riwnáce, 1843)

Problems of relative growth - Huxley, Julian, 1887 -1975 (L. MacVeagh, The Dial Press, 1932)

Proceedings - Dorset Natural History; Archaeological Society.

Proceedings and Transactions of the Croydon Microscopical & Natural History Club - Croydon Microscopical; Natural History Club. (1871)

Proceedings and transactions of the South London Entomological & Natural History Society - South London Entomological; Natural History Society (The Society, 1962)

Proceedings - Dorset Natural History and Archaeological Society - Dorset Natural History; Archaeological Society. (1877)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1844)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1846)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1848)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1850)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1852)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1859)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1864)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1873)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1875)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1883)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1902)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1905)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1908)

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