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

Oversigt over det Kongelige Danske videnskabernes selskabs forhandlinger = Bulletin de l'Académie royale des sciences et des lettres de Danemark - Kongelige Danske videnskabernes selskab. (A.F. Høst, 1881)

Oversigt over det Kongelige Danske videnskabernes selskabs forhandlinger = Bulletin de l'Académie royale des sciences et des lettres de Danemark - Kongelige Danske videnskabernes selskab. (A.F. Høst, 1884)

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

Pacific science - University of Hawaii. (University Press of Hawaii, 1954)

Palaeontographia Italica : Memorie di paleontologia - Canavari, Mario 1855 -1928 (Tip. T. Nistri, 1895)

Palaeontographica (Theodor Fischer, 1846)

Palaeontology - Palaeontological Association (Palaeontological Association, 1965)

Palaeontology - Palaeontological Association (Palaeontological Association, 1989)

Palaeontology - Palaeontological Association (Palaeontological Association, 1990)

Palaeontology - Palaeontological Association (Palaeontological Association, 1991)

Palaeontology - Palaeontological Association (Palaeontological Association, 1995)

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

Palaeontology or A systematic summary of extinct animals and their geological relations - Owen, Richard, 1804 -1892 (A. and C. Black, 1861)

Paläobiologie der cephalopoden aus der gruppe der dibranchiaten - Abel, Othenio, 1875 -1946 (G. Fischer, 1916)

Paläobiologie der Cephalopoden aus der Gruppe der Dibranchiaten - Abel, Othenio, 1875 -1946 (G. Fischer, 1916)

Paleontologia del regno di Napoli : contenente la descrizione e figura di tutti gli avanzi organici fossili racchuisi nel suolo di questo regno - Costa, Oronzio Gabriele, 1789 -1867 (Tramater, 1850)

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

Papers and proceedings of the Royal Society of Tasmania - Royal Society of Tasmania. (The Society, 1924)

Papers and published notes : 1869 to 1876 - Goode, G. Brown (George Brown), 1851 -1896 (1869)

Papers from the Tortugas Laboratory of the Carnegie Institution of Washington - Carnegie Institution of Washington. Department of Marine Biology. (Carnegie Institution of Washington, 1917)

Papers on Mollusca of Japan - Pilsbry, Henry Augustus, 1862 -1957 (1901)

Parasitology - British Society for Parasitology. (Cambridge University Press, 1908)

Periódico zoológico - Sociedad Entomológica Argentina. (Sociedad Entomica Argentina, 1874)

Petri Andreae Matthioli ... Commentarii secvndo avcti, in libros sex Pedacii Dioscoridis Anazarbei, de medica materia : adiectis quamplurimis plantarum, & animalium imaginibus, quæ in priore editione non habentur, eodem auctore. His accessit eivsdem Apologia adversvs Amathum Lusitanum - Mattioli, Pietro Andrea, 1501 -1577 (in officina Valgrisiani, 1560)

Petri Andreæ Matthioli Senensis, medici caesari, et serenissimi principiis Ferdinandi archidvcis Avstriae &c. Commentarij in VI. libros Pedacij Dioscoridis Anazarbei de medica materia, ab ipso avtore recogniti, et locis plvs mille avcti. Adjectis magnis, ac nouis plantarum, ac animalium iconibus ... Accesserunt ad margines Græci contextus ... qui Dioscoridis ipsius deprauatam lectionem restituunt. Cum locupletissimis indicibus - Mattioli, Pietro Andrea, 1501 -1577 (apud Felicem Valgrisium, 1583)

Petri Matthioli ... Opera quae extant òmnia, hoc est, Commentarii in VI. libros Pedacii Dioscoridis Anazarbei De medica materia : adjectis in margine variis Graeci testus lectionibus, ex antiquissimis codicibus desumptis, qui Dioscorides depravatam lectionem restituunt - Bauhin, Caspar, 1560 -1624 (Sumptibus Joannis König, 1674)

Pflügers Archiv für die gesamte Physiologie des Menschen und der Tiere (M. Hager, 1910)