United States. Department of Health, Education, and Welfare. (1924). Study of pollution and natural purification of Ohio River: II. Report on surveys and laboratory studies. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Health, Education, and Welfare. Study of Pollution and Natural Purification of Ohio River: II. Report on Surveys and Laboratory Studies. [Washington]: GPO, 1924.
MLA (9th ed.) CitationUnited States. Department of Health, Education, and Welfare. Study of Pollution and Natural Purification of Ohio River: II. Report on Surveys and Laboratory Studies. GPO, 1924.
Warning: These citations may not always be 100% accurate.