TY  - SER
AU  - Singh, K. N.,
TI  - Indian Journal of Extension Education Vol. 6(1-4), Vol. 7(1-4), Vol. 8(1-4)
U1  - 630 
PY  - 1970///-72
CY  - New Delhi
PB  - Indian Society of Extension Education
KW  - Agriculture. & related technologies
KW  - Extension Education
ER  -