TY - BK ED - Consultative Group on International Agricultural Research (CGIAR) TI - Environment impacts of productivity-enhancing crop research: A critical review. A report from TAC's standing panel on impact assessment (SPIA) PY - 2001/// PB - CGIAR|FAO, KW - Crops KW - AGROVOC KW - Environmental impact KW - Food policies KW - Research support KW - Seed production KW - Food security ER -