TY  - BOOK
AU  - Brady N C
TI  - Agriculture and the quality of our environment
U1  - 630.2 
PY  - 1967///
CY  - Washington
PB  - American Association for the Advancement of Science
KW  - Agriculture
N1  - A symposium presented at the 133rd meeting of the AAAS, Dec., 1966
ER  -