Clean air act
Subtitle: new 1990 amendments.
Contributors: Pennsylvania Bar Institute.
Series: PBI ;; no. 1991-623; PBI (Series) ;; no. 1991-623.
Publisher: Pennsylvania Bar Institute
Published: 1991
Place of publication: [Harrisburg, Pa.] (104 South St. Harrisburg 17108-1027)
Language: eng
Number of pages: 90
Subjects: Air -- Pollution -- Law and legislation -- United States.; Air -- Pollution -- Law and legislation -- Pennsylvania.