Phosphorescence; or, The emission of light by minerals, plants, and animals - Phipson, T. L. (Thomas Lamb), 1833 -1908 (L. Reeve & co, 1862)

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

Physiological regulations - Adolph, Edward F. (Edward Frederick), 1895 -1986 (The Jacques Cattell Press, 1943)

The physiology of earthworms - Laverack, M. S. (Macmillan, 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 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)

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Plantevæxten paa Færøerne : med sæerlig hensyntagen til blomsterplanterne - Ostenfeld, C. H. (Carl Hansen), 1873 -1931 (Gyldendal, 1906)

Polychaetes & allies : the southern synthesis - Glasby, Christopher John (Environment Australia, 2000)

Polyembryonic development in Tatusia novemcincta - Patterson, John Thomas, 1878 - (1913)

Pond life - Ash, Edward C. (Edward Cecil), 1888 - (T.C. & E.C. Jack, 1913)

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

Popular natural history : a description of animal life, from the lowest forms up to man - Kingsley, J. S. (John Sterling), 1854 -1929 (Estes & Lauriat, 1890)

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Popular Science Review (1864)

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Popular scientific recreations in natural philosophy, astronomy, geology, chemistry - Tissandier, Gaston, 1843 -1899 (Ward, Lock, 1883)

The population of an old pear-tree; or, Stories of insect life - Yonge, Charlotte M. (Charlotte Mary), 1823 -1901 (Macmillan, 1870)

The porifera and coelentera - Bourne, Gilbert C. (Gilbert Charles), 1861 -1933 (Adam & Charles Black, 1900)

The powers of the Creator displayed in the creation; or, Observations on life amidst the various forms of the humbler tribes of animated nature - Dalyell, John Graham, 1775 -1851 (J. Van Voorst, 1853)

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The practical gardener, and modern horticulturist - McIntosh, Charles, 1794 -1864 (T. Kelly, 1836)

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Principles of comparative physiology - Carpenter, William Benjamin, 1813 -1885 (John Churchill, 1854)

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Principles of soil microbiology - Waksman, Selman A. (Selman Abraham), 1888 -1973 (Williams & Wilkins, 1927)

Principles of zoölogy : a guide for beginners - Schiedt, Richard Francis Conrad, 1859 -1951 (Examiner Printing House, 1892)

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Problems of genetics - Bateson, William, 1861 -1926 (Yale University Press, 1913)

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