U.S. Dept. of Health, Education, and Welfare, Public Health Service, Bureau of State Services, Division of Sanitary Engineering Services, Water Supply and Water Pollution Control Program[1965?]-<NA224-8>
U.S. Dept. of Health, Education, and Welfare, Public Health Service, Bureau of State Services, Division of Sanitary Engineering Services, Water Supply and Water Pollution Control Program1958-<628.0973-Uw32s>