TY  - BOOK
AU  -  P.N.Mathur
TI  - Small field demonstration and field trials;an extension worker' s guide
U1  - PH 374.14:63(026)   M4 
PY  - 1984///
CY  - New Delhi
PB  - Ministry of Agriculture, G/I
KW  - Mathur, P.N.
KW  - Extension education
ER  -