The Clean air act, are the problems real? / [by David G. Hawkins].
Contributors: Hawkins, David G.
Series: OPA ; 51/9
Publisher: Environmental Protection Agency
Published: 1979
Place of publication: [Washington]
Language: eng
Subjects: Air -- Pollution.
Notes: Speech before the Air Quality Conference, San Francisco, Calif., Jan 15, 1979.

Jan. 1979.