TY  - BOOK
AU  - Troeh, Frederick.
TI  - Soil and Water Conservation for Productivity and Environmental Protection / 
SN  - 0-13-822-155-3
U1  - J:1:7OaG:555 
PY  - 1987///
CY  - New Jersey : 
PB  - Prentice-Hall,Inc. , 
KW  - Agriculture <Soil>
ER  -