00279nam a2200109 a 450000500170000008200170001710000150003424500550004926000310010430000180013563000160015320251202164313.0  a630.072bELG  aElg,Dicter  aPlanning and the managers of agricultural research  aWasingtonbWorldbankc1984  a141 p.b24 cm  aAgriculture