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Some conservation problems of the Great Lakes; [address given at the joint technical program of the American Geophysical Union and the American Meteorological Society in a Symposium on the Natural Setting and Engineering Problems of the Great Lakes, Del Prado Hotel, Chicago, Illinois, September 11, 1952]
Publication info: Urbana, 1953
Biological notes
Publication info: Urbana Illinois Natural History Survey 1933-1988