Who was an American writer responsible for a dissertation concerning  the towns and districts built near sediment formations around Lake Superior?
Paul H. Landis Paul Henry Landis, (5 March 1901 – 30 August 1985) was an American sociologist. A prolific writer of over 20 books and 100 journal articles, Landis’s work spanned the fields of rural sociology, Natural Resource Sociology, Sociology of Education, Adolescence, Social Control, and many other topics. Born in Cuba, Illinois, Landis was raised in a fundamentalist religious upbringing, before attending Greenville College and eventually the University of Michigan for a Masters Degree and The University of Minnesota for a PhD. After graduation from the University of Minnesota in 1931, Landis joined the faculty of South Dakota State University (then called South Dakota State College) as an assistant professor in the Department of Rural Sociology. His PhD dissertation on Minnesota's Iron Range was published as the book "Three Iron Mining Towns: a study in cultural change", now considered a landmark in Natural Resource Sociology. In 1935 he joined the faculty of the Washington State University (at the time called the State College of Washington), eventually becoming the official State Professor of Sociology, as well eventually Dean of the Graduate School at Washington State. Landis was elected and served as President of the Rural Sociological Society from 1945-1946.
G. Evelyn Hutchinson George Evelyn Hutchinson {'1': ", '2': ", '3': 'ForMemRS', '4': "} (January 30, 1903 – May 17, 1991), was an American ecologist sometimes described as the "father of modern ecology." He contributed for more than sixty years to the fields of limnology, systems ecology, radiation ecology, entomology, genetics, biogeochemistry, a mathematical theory of population growth, art history, philosophy, religion, and anthropology. He worked on the passage of phosphorus through lakes, the chemistry and biology of lakes, the theory of interspecific competition, and on insect taxonomy and genetics, zoo-geography and African water bugs. He is known as one of the first to combine ecology with mathematics. He became an international expert on lakes and wrote the four-volume "Treatise on Limnology" in 1957.