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Subseries 3. Committee Reviews and Reports,

Folder 23 Allegheny County Air Pollution Control Review, 1974
Folder 24-25 Allegheny County Air Pollution Episode, 1973-1975

Box 3
Folder 1 Allegheny County Bureau of Air Pollution Control Implementation Plan, June 26, 1970
Folder 2 Bureau of Air Pollution Control Measurement Report