TY  - BOOK
AU  - Donahue, Roy L.
AU  - Christiansen, James E.
TI  - Exploring agriculture: an introduction to food and agriculture 
SN  - 013295070
U1  - 630 
PY  - 1979///
CY  - Englewood Cliffs
PB  - Prentice-Hall
KW  - Agriculture
ER  -