Zoology : an elementary text-book - MacBride, E. W. (Ernest William), 1866 -1940 (Univ. Press, 1920)

Zoology for high schools and colleges - Packard, A. S. (Alpheus Spring), 1839 -1905 (H. Holt and Company, 1889)

Zoology for high schools and colleges - Packard, A. S. (Alpheus Spring), 1839 -1905 (H. Holt and Company, 1886)

Zoology for high schools and colleges - Packard, A. S. (Alpheus Spring), 1839 -1905 (H. Holt and Company, 1895)

Zoology for high schools and colleges - Packard, A. S. (Alpheus Spring), 1839 -1905 (H. Holt and company, 1893)

Zoology for high schools and colleges - Packard, A. S. (Alpheus Spring), 1839 -1905 (H. Holt and Company, 1880)

Zoology for medical students - Kerr, John Graham, 1869 -1957 (Macmillan and co., ltd, 1921)

Zoology for students : a handbook - Royal College of Physicians of Edinburgh. (Daldy, Isbister, 1875)

Zoology : for students and general readers - Packard, A. S. (Alpheus Spring), 1839 -1905 (Henry Holt, 1879)

Zoology of the invertebrata : a text-book for students - Shipley, A. E. Sir, (Arthur Everett), 1861 -1927 (A. and C. Black, 1893)

Zoology of the vertebrate animals - Packard, A. S. (Alpheus Spring), 1839 -1905 (Holt, 1878)

Zoology; a text-book for secondary schools, normal schools and colleges - Galloway, Thomas Walton, 1866 -1929 (P. Blakiston, 1909)

Zoology, a textbook for college and university students - Chidester, Floyd Earle, 1884 -1947 (D. Van Nostrand, 1932)

Zöology; a textbook for colleges and universities - Cockerell, Theodore D. A. (Theodore Dru Alison), 1866 -1948 (World book company, 1920)

Zoology : a textbook for universities, colleges and normal schools / Thomas Walton Galloway - Galloway, Thomas Walton, 1866 -1929 (Blakiston, 1915)

Zoosystema - Muséum national d'histoire naturelle (France) (Ed. scientifiques du Muséum, 1997)

Zoosystematics and evolution (Pensoft, 2014)

Zoosystematics and evolution (Pensoft, 2015)

Zoosystematics and evolution (Pensoft, 2016)

Zoosystematics and evolution (Pensoft, 2017)

Zoosystematics and evolution (Pensoft, 2018)

Zoosystematics and evolution (Pensoft, 2019)

Zoosystematics and evolution (Pensoft, 2020)