TY  - BOOK
AU  - Oelhaf,Robert C.
TI  - Organic agriculture : economic and ecological comparisons with conventional methods
SN  - 0470-26427-6
PY  - 1978///
CY  - New York
PB  - John Wiley & Sons
KW  - Agricultura Organica
KW  - Agricultura Alternativa
KW  - Fertilidad del Suelo
KW  - Aspectos Economicos
KW  - Ecología
ER  -