TY  - BOOK
ED  - United States
TI  - Nondegradation policy of the Clean air act: Hearing, Ninety-third Congress, first session
AV  - KF26 .P825 1973d
U1  - 301.31 
PY  - 1973///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Air
KW  - Pollution
KW  - Law and legislation
KW  - United States
KW  - Local
KW  - Air Pollution
KW  - prevention & control
N1  - "Serial no. 93-H16."; Includes bibliographical references
ER  -