?url_ver=Z39.88-2004&rft_id=doi%3A10.1080%2F09064710.2020.1712470&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=A+R&rft.au=Ngwira%2C+A+R&rft.aulast=Ngwira&rft.atitle=Productivity+and+profitability+of+maize-legume+cropping+systems+under+conservation+agriculture+among+smallholder+farmers+in+Malawi&rft.title=Acta+Agriculturae+Scandinavica%2C+Section+B+%E2%80%94+Soil+%26+Plant+Science+(TSI)&rft.issn=0906-4710&rft.date=January+2020&rft.pages=1-11&rft.genre=article