Books by Gordon E. McCallum:
Books in the extended shelves:
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McCallum, Gordon E.: Great Lakes development program; review and prospects (U.S. Dept. of Health, Education, and Welfare, Public Health Service, Division of Water Supply and Pollution Control, 1964), also by Leonard B. Dworsky, United States Division of Water Supply and Pollution Control, and : 1964 : Toronto) Conference on Great Lakes Research (7th (page images at HathiTrust)
Find more by Gordon E. McCallum at your library, or elsewhere.