The Legal and Legislative Aspects Involved in the Pollution of the Waters of the State by Industrial Wastes / Honorable Robert C. Smith, State Representative -- How Serious is the Problem of Water Pollution by Industrial and Domestic Wastes in Missouri? / Jack Smith, Bureau of Public Health Engineering, Division of Health of Missouri -- The Nature, Prevention and Abatement of Liquid Industrial Wastes / Glen J. Hopkins, Sanitary Engineer Director, Water Supply and Water Pollution Control Program, Public Health Service, U. S. Department of Health, Education and Welfare, Kansas City, Missouri -- A Survey of the Areas of Interest in Air Pollution Problems / Jean J. Schueneman, Public Health Engineer, U.S. Department of Health, Education and Welfare, Public Health Service / Robert A. Taft Sanitary Engineering Center, Cincinnati, Ohio -- What One City has Done to Control and Reduce the Smoke Problem / J. H. Carter, Commissioner of Smoke Regulation, St. Louis, Missouri -- How Serious is the Air Pollution Problem in Missouri? / Louis F. Garber, Chief, Industrial Hygiene, Division of Health of Missouri