Colbert, E. H. (1961). Evolution of the vertebrates: A history of the backboned animals through time. New York: Science editions.
Παραπομπή Chicago StyleColbert, Edwin H. Evolution of the Vertebrates: A History of the Backboned Animals Through Time. New York: Science editions, 1961.
Παραπομπή MLAColbert, Edwin H. Evolution of the Vertebrates: A History of the Backboned Animals Through Time. New York: Science editions, 1961.
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