Отправить по sms: Water pollution control : hearings before a Special Subcommittee on Air and Water Pollution of the Committee on Public Works, United States Senate, Eighty-eighth Congress, first session, on S. 649, a bill to amend the Federal water pollution control act; S. 737, a bill to provide assistance to small business concerns for construction of pollution treatment works; and S. 1118 and S. 1183, bills requiring detergents to comply with standards of degradability, June, 17, 18, 19, 20, 25, and 26, 1963.