Part 57: Aspects of Limnology in America, 1930s to about 1990, Led by Hutchinson and Hasler.

The article offers information on the aspects of limnology in the U.S. from 1930 to 1990, focusing on the works by ecologist George Evelyn Hutchinson and University of Wisconsin-Madison limnology head Arthur Davis Hasler. It offers brief profiles of Hutchinson and Hasler including their education, career in limnology, and their research in ecology topics. Other topics include their graduate students and the American Society of Limnology and Oceanography.