Sustainable development and the changing needs for impact assessment of international agricultural research text New York [Rockefeller Foundation] 1991 183p.: ills.; 28 cm PENELITIAN PERTANIAN 63.001.5 63.001.5 INLIS000000000000462 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)