TY  - BOOK
AU  - Alberchk, Hartmut
AU  - Bergmann
TI  - Agriculture extension .V .2 examples and back ground material
SN  - 3 88085 405 x
U1  - 630 .715 
PY  - 0000///
CY  - New Delhi
PB  - Wiley Eastern Ltd
KW  - Planning extension work
KW  - state extension services
ER  -