na INLIS000000000003290 0010-0121001656 A Logical framework for planning agricultural research programs Bernd Schubert, Uwe Jens Nagel, Glenn L. Denning and Prabhu L. Pingali Manila International Rice Research Institute 1991 21 p. : ill; 28 cm 63.001.5 63.001.5 AGRICULTURE RESEARCH PLANNING. 4531 4531