Brauhn J.L. and Schoettger R.A., (1975) Acquisition and Culture of Research Fish: Rainbow trout, Fathead minnows, Channel Catfish and Bluegills. p. 54, Ecological Research Series, EPA-660/3-75-011, Duluth, Minnesota.
Brauhn J. L. and Schoettger R. A. (1975). Acquisition and Culture of Research Fish: Rainbow trout, Fathead minnows, Channel Catfish and Bluegills. p. 54, Ecological Research Series, EPA-660/3-75-011, Duluth, Minnesota.