Regulation of the Northwest Air Pollution Authority amended August 9, 1978.
Publisher: Northwest Air Pollution Authority
Published: 1978
Place of publication: Mount Vernon, Wash
Language: eng
Subjects: Air -- Pollution -- Standards -- Washington (State); Air quality -- Standards -- Washington (State)
Other titles: Regulations representing the counties of: Island, San Juan, Skagit, Whatcom; Northwest Air Pollution Authority Regulations
Notes: Title from caption.