TY  - GEN
AU  - Bolliger, Ernst
AU  - Zellweger, Tonino
AU  - Reinhard, Peter
TI  - Agricultural extension: guidelines for extension workers in rural areas
SN  - 818586022X
U1  - 631.715 
PY  - 1990///
CY  - Lucknow
PB  - International book distributing
KW  - Agriculture and related technologies
KW  - Apparatus, equipment, materials
KW  - Water conservation
ER  -