TY  - BOOK
AU  - Gerber,Siegfried E.
TI  - Modern way of agriculture and its impact on environment
AV  - SB998.E4 G47 
PY  - 1990///
CY  - Nakuru
PB  - Technopress (K) Limited
KW  - Earthworms
KW  - Organic farming
ER  -