TY  - BOOK
AU  - Barker,Allen V., x
AU  - x
TI  - Science and technology of organic farming : x 
SN  - 9781439816127
U1  - 631.584/B223s  
PY  - 2010///
CY  - London 
PB  - CRC Press 
KW  - Organic farming
KW  - Agricultural chemistry
ER  -