Water pollution--1970.
Subtitle: Hearings, Ninety-first Congress, second session, on S.3687, S.3468, S.3470, S.3471, S.3472, S.3181, S.3484, S.3500, S.3507, S.3614, S.3688, and S.3697 ...
Publisher: U.S. Govt. Print. Off.
Published: 1970
Place of publication: Washington
Language: eng
Subjects: Water -- Pollution -- United States.
Notes: Hearings held Apr. 20-   1970.