TY  - BOOK
AU  - Cox, George W.
AU  - Atkins, Michael D.
TI  - Agricultural ecology: : an analysis of world food production systems
U1  - 630.215 
PY  - 1979///
CY  - San Francisco, Ca.
PB  - Freeman
KW  - Ecología agrícola
KW  - Sistemas de cultivo
ER  -