TY  - BOOK
ED  - E.U.A. Department of Agriculture
TI  - Major crop áreas and climatic profiles
U1  - 631 
PY  - 1987///
CY  - Washington, D. C.
PB  - The Department
KW  - Cultivos
KW  - Zonas de
KW  - Ecología vegetal
KW  - Geografía agrícola
N1  - 39-112
ER  -