TY  - BOOK
AU  - HOWARD F GREGOR
TI  - GEOGRAPHY OF AGRICULTURE: THEMES IN RESEARCH
U1  - GN630.91G861G 
PY  - 1970///
CY  - N.J.
PB  - PRENTICE-HALL, INC.
KW  - GEOGRAPHY OF AGRICULTURE: THEMES IN RESEARCH
ER  -