State implementation plan for carbon monoxide.
Contributors: Portland (Or.); Metropolitan Service District (Or.); Oregon. Dept. of Environmental Quality.
Publisher: City of Portland; Metropolitan Service District; Oregon Dept. of Environmental Quality
Published: 1981
Place of publication: Portland, Or
Language: eng
Number of pages: 84
Subjects: Air -- Pollution -- Oregon -- Portland Metropolitan Area.; Carbon monoxide.
Notes: Title from cover.

OR EQ.2Im7/2.