Maredia, Mywish K.; Raitzer, David A. - In: Agricultural Systems 106 (2012) 1, pp. 46-58
Based on a comprehensive search and review of the literature, 42 studies are identified for in-depth review and analysis of documented impacts of agricultural research from 1959 to 2009. This body of evidence is subjected to a systematic, quantitative scrutiny for the coverage and type of impact...