TY  - BOOK
AU  - Nelson, Michael
TI  - Organic farming: methods, economics and structure
SN  - 9781606928646
U1  - Cir. 631.584 Or8  
PY  - 2009///
CY  - New York
PB  - Nova Science Publishers, Inc.
KW  - Organic farming
KW  - Humus
KW  - Soil microbiology ecology
KW  - Natural foods
ER  -