IMPROVE progress report
By: by Marc Pitchford and David Joseph.
Contributors: Joseph, David, 1947-; United States. Environmental Protection Agency. Office of Air Quality Planning and Standards.
Publisher: Office of Air Quality Planning and Standards, Office of Air and Radiation, U.S. Environmental Protection Agency
Published: 1990
Place of publication: Research Triangle Park, NC
Language: eng
Subjects: Air quality -- Government policy -- United States -- States.; Air quality -- United States -- States -- Measurement.; Environmental monitoring -- United States -- States.; Parks -- Government policy -- United States -- States.
Notes: Distributed to depository libraries in microfiche.

"May 1990."

"EPA-450/4-90-008."

Includes bibliographical references.