TY  - BOOK
AU  - Bethea,Robert M.
TI  - Air control technology: an engineering analysis points of view 
SN  - 0442207158
PY  - 1978///
CY  - New York
PB  - Van Nostrand Reinhold
KW  - Air
KW  - Pollution
KW  - Purification
KW  - Equipment and supplies
KW  - Environmental engineering
N1  - Includes bibliographies and index
ER  -