?url_ver=Z39.88-2004&rft_id=doi%3A10.1080%2F07900627.2020.1739512&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=V&rft.au=Bjornlund%2C+V&rft.aulast=Bjornlund&rft.atitle=Why+agricultural+production+in+sub-Saharan+Africa+remains+low+compared+to+the+rest+of+the+world+%E2%80%93+a+historical+perspective&rft.title=International+Journal+of+Water+Resources+Development+(TSI)&rft.issn=0790-0627&rft.date=May+2020&rft.pages=1-34&rft.genre=article