TY  - BOOK
AU  - Niels Roling
TI  - Extension science : Information systems in agricultural development
SN  - 0-521-34437-9
U1  - 630.715 
PY  - 1988///
CY  - Cambridge
PB  - Cambridge University Press
N1  - Niels Roling: Extension science : Information systems in agricultural development.  Cambridge.  Cambridge University Press, 1988. 0-521-34437-9--(630.715ROL)
ER  -