Protecting visibility
Subtitle: an EPA report to Congress
By: U.S. Environmental Protection Agency, Office of Air, Noise and Radiation, Office of Air Quality Planning and Standards.
Publisher: The Agency
Published: 1979
Place of publication: Research Triangle Park, N.C
Language: eng
Subjects: Air -- Pollution -- United States.; Air -- Pollution -- Standards -- United States.
Notes: "Preprint"--Cover.

"October 1979."

"EPA-450/5-79-008."

Includes bibliographical references.