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Books from the extended shelves:
- Bellack, Ervin: Drinking water pilot study : summary (U.S. Environmental Protection Agency, Office of Drinking Water, 1983), also by North Atlantic Treaty Organization. Committee on the Challenges of Modern Society, Joseph A. Cotruvo, and United States. Office of Drinking Water (page images at HathiTrust)
- Bellack, Ervin: Fluoridation engineering manual. (Environmental Protection Agency, Office of Water Programs, Water Supply Programs Division, 1972) (page images at HathiTrust)
- Bellack, Ervin: Fluoridation engineering manual (U.S. Dept. of Health and Human Services, Public Health Service, Center for Disease Control, Bureau of State Services, Dental Disease Prevention Activity, 1984), also by Center for Disease Control. Dental Disease Prevention Activity and United States. Environmental Protection Agency. Water Supply Division (page images at HathiTrust)
- Bellack, Ervin: School water supply fluoridation. - (Environmental Protection Agency, Water Supply Division, 1972) (page images at HathiTrust)
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