TY  - BOOK
AU  - Heady,Earl Orel
AU  - Vocke,Gary
TI  - Economic models of agricultural land conservation and environmental improvement / (Acc: 1531)
SN  - 0813805236 (alk. paper)
U1  - 338.927 HEA 22
PY  - 1992///
CY  - Ames
PB  - Iowa State University Press
KW  - Soil conservation
KW  - Agricultural conservation
ER  -