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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 (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 (Humphrey Milford, Oxford University Press, 1929)

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Palaeontographica Americana - Paleontological Research Institution (Ithaca, N.Y.) (Paleontological Research Institution, 1956)

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Panama, 1958 : to visit the Canal Zone Biological Area and to collect bird specimens in the Canal Zone, Bocas del Toro, Cocle, La Jagua, and on Isla Escudo de Veraguas; Assisted by Beatrice Thielen Wetmore; Correspondence, reference materials, expense records, travel notes, photographs and photographic records, field report, and memorabilia. Correspondents include Herbert Friedmann and Louise M. Pearson - Wetmore, Alexander, 1886 -1978 (1958)

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Patterns and problems of development - Child, Charles Manning, 1869 -1954 (The University of Chicago Press, 1941)

Pedigrees of English Short-horn bulls, to which American Short-horns trace - Allen, Lewis F. (Lewis Falley), 1800 -1890 (Warren, Johnson, 1874)

Die Pflanzenfeinde aus der Klasse der Insekten. Ein nach Pflanzenfamilien geordnetes Handbuch sämmtlicher auf den einheimischen Pflanzen bisher beobachteten Insekten zum Gebrauch für Entomologen, Insektensammler, Botaniker, Land- und Forstwirthe und Gartenfreunde - Kaltenbach, J. H. (Johann Heinrich), 1807 -1876 (J. Hoffmann, 1874)

Das Pflanzenleben der Schweiz - Christ, H. (Hermann), 1833 -1933 (F. Schulhess, 1882)

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Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1710)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1742)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1746)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1747)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1759)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1876)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1877)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1878)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1880)

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

Phylogeny of the Pelecypoda : the Aviculidae and their allies - Jackson, Robert Tracy, 1861 -1948 (Boston Society of Natural History, 1890)

Physical chemistry of vital phenomena, for students and investigators in the biological and medical sciences - McClendon, J. F. (Jesse Francis), 1880 -1976 (Princeton University Press, 1917)

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