?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=J&rft.au=Ndjeunga%2C+J&rft.aulast=Ndjeunga&rft.atitle=Uptake+of+improved+technologies+in+the+semi-arid+tropics+of+West+Africa%3A+why+is+agricultural+transformation+lagging+behind%3F&rft.title=electronic+Journal+of+Agricultural+and+Development+Economics&rft.issn=1812-7029+&rft.date=2005&rft.volume=2&rft.pages=85-102&rft.issue=1&rft.genre=article