THE IMPACT OF AGRICULTURAL EXTENSION: THE TRAINING AND VISIT SYSTEM IN INDIA Gershon Feder, Gershon Feder Search for other works by this author on: Oxford Academic Google Scholar Roger Slade Roger Slade Search for other works by this author on: Oxford Academic Google Scholar The World Bank Research Observer, Volume 1, Issue 2, July 1986, Pages 139–161, https://doi.org/10.1093/wbro/1.2.139 Published: 01 July 1986
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Feder et al. (1986) studied this question.
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