Petites nouvelles entomologiques (E. Deyrolle, 1869)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1921)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1923)

Das Pflanzenreich :regni vegetablilis conspectus - Engler, Adolf, 1844 -1930 (W. Engelmann, 1922)

Phyllocarida and phyllopoda - Sars, G. O. (Georg Ossian), 1837 -1927 (Printed by the Joint-stock Print. Co, 1896)

Die Phyllopoden, Cladoceren und freilebenden Copepoden der nord- schwedischen Hochgebirge : ein Beitrag zur Tiergeographie, Biologie und Systematik der arktischen, nord- und mittel-europäischen Arten - Ekman, Sven, 1876 -1964 (G. Fischer, 1904)

A phylogenetic classification of animals (for the use of students) - Herdman, W. A. Sir, (William Abbott), 1858 -1924 (Macmillan and Co, 1885)

Phylogeny and evolution of Crustacea : proceedings of a conference held at Cambridge, Mass, March 6-8, 1962 - Whittington, H. B. (Harry Blackmore), 1916 -2010 (Museum of Comparative Zoology, 1963)

The physiology of the Invertebrata - Griffiths, A. B. (Arthur Bower), 1859 - (D. Appleton and Company, 1892)

The physiology of the invertebrata - Griffiths, A. B. (Arthur Bower), 1859 - (L. Reeve, 1892)

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

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

The pineal organ; the comparative anatomy of median and lateral eyes, with special reference to the origin of the pineal body; and a description of the human pineal organ considered from the clinical and surgical standpoints - Gladstone, Reginald John, 1865 - (Williams & Wilkins, 1940)

The planarians (Turbellaria) of temporary waters in eastern North America - Royal Ontario Museum. (Royal Ontario Museum, 1981)

Plantae Postianae - Autran, Eugène, 1855 -1912 (G. Bridel, 1893)

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The Popular educator: a complete encyclopaedia of elementary, advanced and technical education (Cassell, 1888)

The popular encyclopedia; being a general dictionary of arts, sciences, literature, biography, history, and political economy, reprinted from the American edition of the "Conversations lexicon" ... with dissertations on the rise and progress of literature (Blackie, 1900)

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