?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Ndjeunga%2C+J&rft.aufirst=J&rft.aulast=Ndjeunga&rft.isbn=9781780644011&rft.tpages=478&rft.date=2015&rft.title=Assessing+the+Effectiveness+of+Agricultural+R%26D+for+Groundnut%2C+Pearl+Millet%2C+Pigeonpea%2C+and+Sorghum+in+West+and+Central+Africa+and+Eastern+and+Southern+Africa&rft.btitle=Crop+Improvement%2C+Adoption+and+Impact+of+Improved+Varieties+in+Food+Crops+in+Sub-Saharan+Africa&rft.genre=bookitem