The principles of biology - Spencer, Herbert, 1820 -1903 (D. Appleton and company, 1898)

The principles of biology - Spencer, Herbert, 1820 -1903 (D. Appleton, 1896)

The principles of biology, by J. I. Hamaker - Hamaker, John Irvin, 1869 - (P. Blakiston, 1913)

The principles of biology - Hamaker, J. I. (John Irvin), 1869 - (P. Blakiston's Sons & Co, 1913)

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

Principles of economic zoölogy - Daugherty, L. S. (Lewis Sylvester) 1857 -1919 (W. B. Saunders Company, 1917)

Principles of economic zoo̤logy - Daugherty, L. S. (Lewis Sylvester) 1857 -1919 (W.B. Saunders, 1915)

Principles of economic zoölogy - Daugherty, L. S. (Lewis Sylvester) 1857 -1919 (W. B. Saunders company, 1912)

Principles of economic zoölogy - Daugherty, L. S. (Lewis Sylvester) 1857 -1919 (W. B. Saunders, 1917)

Principles of economic zoölogy - Daugherty, L. S. (Lewis Sylvester) 1857 -1919 (W.B. Saunders, 1912)

Principles of general and comparative physiology : intended as an introduction to the study of human physiology : and as a guide to the philosophical pursuit of natural history - Carpenter, William Benjamin, 1813 -1885 (John Churchill, 1839)

Principles of human physiology - Carpenter, William Benjamin, 1813 -1885 (Henry C. Lea, 1876)

Principles of human physiology : with their chief applications to pathology, hygiène, and forensic medicine - Carpenter, William Benjamin, 1813 -1885 (Lea & Blanchard, 1845)

Principles of human physiology, with their chief applications to pathology, hygiene, and forensic medicine - Carpenter, William Benjamin, 1813 -1885 (Lea and Blanchard, 1847)

Principles of modern biology - Marsland, Douglas, 1899 - (Holt, Rinehart and Winston, 1899)

Principles of physiology, general and comparative - Carpenter, William Benjamin, 1813 -1885 (John Churchill, 1851)

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

Principles of zoology : touching the structure, development, distribution and natural arrangement of the races of animals, living and extinct; with numerous illustrations. For the use of schools and colleges. Pt. I. Comparative physiology - Agassiz, Louis, 1807 -1873 (Gould, Kendall and Lincoln, 1848)

Principles of zoölogy : touching the structure, development, distribution, and natural arrangement of the races of animals, living and extinct, with numerous illustrations : part I, Comparative physiology, for the use of schools and colleges - Agassiz, Louis, 1807 -1873 (Gould and Lincoln, 1851)

Principles of zoölogy : touching the structure, development, distribution, and natural arrangement of the races of animals, living and extinct with numerous illustrations : Part 1, Comparative physiology : for the use of schools and colleges - Agassiz, Louis, 1807 -1873 (Geo. S. Blanchard, 1863)

Principles of zoölogy : touching the structure, development, distribution, and natural arrangement of the races of animals, living and extinct, with numerous illustrations : part I, Comparative physiology, for the use of schools and colleges - Agassiz, Louis, 1807 -1873 (Gould and Lincoln, 1853)

Principles of zoölogy : touching the structure, development, distribution, and natural arrangement of the races of animals, living and extinct, with numerous illustrations : part I, Comparative physiology, for the use of schools and colleges - Agassiz, Louis, 1807 -1873 (Gould and Lincoln, 1855)

Principles of zoölogy : touching the structure, development, distribution, and natural arrangement of the races of animals, living and extinct, with numerous illustrations : part I, Comparative physiology, for the use of schools and colleges - Agassiz, Louis, 1807 -1873 (Gould and Lincoln, 1859)

Principles of zoölogy : touching the structure, development, distribution, and natural arrangement of the races of animals, living and extinct, with numerous illustrations : part I, Comparative physiology, for the use of schools and colleges - Agassiz, Louis, 1807 -1873 (Gould and Lincoln, 1869)

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

Prirodoslovna istraživanja - Jugoslavenska akademija znanosti i umjetnosti. (1913)

Prirodoslovna istraživanja - Jugoslavenska akademija znanosti i umjetnosti. (1916)

Proceedings - Dorset Natural History; Archaeological Society.

Proceedings (and Annual Report) of the Holmesdale Natural History Club, Reigate - Holmesdale Natural History Club. (1865)

Proceedings and Transactions of the Croydon Microscopical & Natural History Club - Croydon Microscopical; Natural History Club. (1889)

Proceedings and transactions of the Liverpool Biological Society - Liverpool Biological Society. (The Society, 1889)

Proceedings and transactions of the Liverpool Biological Society - Liverpool Biological Society. (The Society, 1890)

Proceedings and transactions of the Liverpool Biological Society - Liverpool Biological Society. (The Society, 1891)