TY  - BOOK
ED  - American Society of Agronomy. Madison, Wis.
TI  - Multiple cropping; proceedings of a symposium
T2  - ASA special publication
U1  - 631.58 
PY  - 1976///
CY  - Madison, Wis.
PB  - The Society
KW  - Cultivos asociados
ER  -