TY  - BOOK
ED  - American Society of Agronomy
TI  - Organic farming : : Current Technology and Its Role in a Sustainable Agriculture
U1  - 631.5 O68 
PY  - 1990///
CY  - Madison, Wisconsin: 
PB  - American Society of Agronomy \ Crop Science Society of America \ Soil Science Society of America, 
KW  - AGR
KW  - COSECHA
KW  - CULTIVOS
N1  - Incluye prefacio y contenido
ER  -