Measuring the Effectiveness of Crop Improvement Research in Sub-Saharan Africa from the Perspectives of Varietal Output, Adoption, and Change: 20 Crops, 30 Countries, and 1150 Cultivars in Farmers’ Fields

Citation:
Rome, Italy: Standing Panel on Impact Assessment (SPIA), Consultative Group on International Agricultural Research (CGIAR) Independent Science and Partnership Council (ISPC) Secretariat, 2014