College zoology - Hegner, Robert William, 1880 -1942 (Macmillan, 1918)

College zoology - Hegner, Robert William, 1880 -1942 (The Macmillan company, 1912)

Colombia Bajo Caguán-Caquetá - Field Museum of Natural History. (The Field Museum, 2019)

Colombia: La Lindosa, Capricho, Cerritos - Field Museum of Natural History. (The Field Museum, 2018)

Colombia, Perú : bajo Putumayo-Yaguas-Cotuhé - Field Museum of Natural History. (Field Museum, Keller Science Action Center, 2021)

The Columella auris in Amphibia - Reed, H. D. (1909)

Comparative anatomy and physiology - Bell, F. J. (Francis Jeffrey), 1855 -1924 (Cassell, 1885)

Comparative anatomy and physiology - Bell, F. J. (Francis Jeffrey), 1855 -1924 (Lea Brothers, 1885)

Comparative anatomy - Neal, Herbert V. (Herbert Vincent), 1869 -1940 (P. Blakiston's Son, 1936)

Comparative anatomy of vertebrates - Kingsley, J. S. (John Sterling), 1854 -1929 (P. Blakiston's son & co, 1912)

Comparative anatomy of vertebrates - Wiedersheim, Robert, 1848 -1923 (Macmillan and co., limited, 1967)

Comparative anatomy of vertebrates - Wiedersheim, Robert, 1848 -1923 (Macmillan and co., limited, 1907)

Comparative animal physiology - Bishop, David W. (Saunders, 1950)

Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus - Nelsen, Olin E. (Olin Everett), 1898 - (Blakiston, 1953)