000 00296nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _a026.3173611
_bWOR
245 0 _aAgricultural research and extension.
260 _aWashington
_bWorldBank
_c1985
650 _aAgricultural extension
942 _cBK
999 _c39063
_d39063