United States. Congress. House. Committee on Government Operations. Conservation and Natural Resources Subcommittee & ProQuest (Firm). (1970). Phosphates in detergents and the eutrophication of America's waters: Hearings, Ninety-first Congress, first session, Dec. 15 and 16, 1969. U.S. Govt. Print. Off.
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Government Operations. Conservation and Natural Resources Subcommittee and ProQuest (Firm). Phosphates in Detergents and the Eutrophication of America's Waters: Hearings, Ninety-first Congress, First Session, Dec. 15 and 16, 1969. Washington: U.S. Govt. Print. Off, 1970.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Government Operations. Conservation and Natural Resources Subcommittee and ProQuest (Firm). Phosphates in Detergents and the Eutrophication of America's Waters: Hearings, Ninety-first Congress, First Session, Dec. 15 and 16, 1969. U.S. Govt. Print. Off, 1970.