and sponsored by the International Association on Water Pollution Research and the Netherlands Association for Water Pollution Control ; edited by S. H. Jenkins
executive editor, S.H. Jenkins ; sponsors, the New Zealand Committee for Water Pollution Research, the Royal Society of New Zealand, the Water Resources Council
Conference in the Matter of Pollution of Lake Michigan and its Tributary Basin in the States of Wisconsin, Illinois, Indiana, and Michigan (3rd session, reconvened : 1971 : Chicago)
Conference in the Matter of Pollution of Lake Superior and its Tributary Basin in the States of Minnesota, Wisconsin, and Michigan (2nd session : 1970 : Duluth)
Conference in the Matter of Pollution of Lake Superior and its Tributary Basin in the States of Minnesota, Wisconsin, and Michigan (2nd session : 1970 : Duluth)