TY  - BOOK
ED  - 
TI  - Agriculture and the environment
SN  -  	0160341442 
AV  - S21.A35 U51
PY  - 1991///
CY  -  Washington, DC : [United States Department of Agriculture] : 
PB  -  For sale by the Supt. of Docs., U.S. G.P.O.
KW  -  
KW  -  Agricultural ecology -- United States.
KW  - Agricultural conservation -- United States
ER  -