Air pollution--1970.
Subtitle: Hearings, Ninety-first Congress, second session, on S. 3229, S. 3466 [and] S. 3546.
Publisher: U.S. Govt. Print. Off.
Published: 1970
Place of publication: Washington
Language: eng
Subjects: Air -- Pollution -- Law and legislation -- United States.
Notes: Includes bibliographical references.
Hearings held Mar. 16   1970.