TY  - BOOK
AU  - Boeringa,R.
TI  - Alternative methods of agriculture
SN  - 0444418938
PY  - 1980///
CY  - Amsterdam
PB  - Elsevier Science
KW  - Organic farming
KW  - Agriculture
KW  - Animal husbandry
KW  - Tillage
KW  - Cropping systems
ER  -