TY  - BOOK
AU  - Stumph,Jerry L.
AU  - Duprey,Robert L.
TI  - Trends in air pollution control regulations
U1  -  628.53 
PY  - 1969///
CY  - Washington, D.C.
PB  - U.S. Government Printing Office
KW  - Air
KW  - Pollution
KW  - Air quality management
ER  -