00549     2200193   4500001002100000005001500021008004100036020001800077035001900095041000700114082001300121090001300134100001800147245007200165260004200237300003000279650002900309990001700338INLIS00000000001077120210520151129210520|||||||||   |   |||   |||| ||   |   a0 521 34437 9  0010-0521010771  aen0 a63/ROL/e  a63/ROL/e0 aROLING, Niels00aExtension science : Information systems in agricultural development  aCambridgebCambridge Universityc1988  axii, 233 p.: ill.; 24 cm. 0aAGRICULTURE -- EXTENSION  a320/ODA/1990