TY  - BOOK
AU  - Ambastha,C.K.
TI  - Communication patterns in innovation development, extension and client systems : a systems approach
SN  - 8170183456
U1  - 302.2 
PY  - 1986///
CY  - Delhi
PB  - B.R. Publishing Corporation
KW  - Communication systems
KW  - Communication - Research
ER  -