00723nam a22002177a 4500 259740 259739 OSt 20230307160627.0 230307b xxu||||| |||| 00| 0 eng d 87019720 0521344379 0521348870 (pbk.) DLC DLC DLC S544 .R65 1988 Röling, Niels G. Extension science : information systems in agricultural development / Niels Röling. Cambridge [England] ; New York : Cambridge University Press, c1988. xii, 233 p. : ill. ; 24 cm. Bibliography: p. 216-224. Agricultural extension work Technological innovations lcc BK 0 0 lcc 0 0 NFIC 40404 40404 GEN 2023-03-07 0 S544 .R65 1988 20153084 2023-03-07 2023-03-07 BK