?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=J&rft.au=Nyamangara%2C+J&rft.aulast=Nyamangara&rft.atitle=Effect+of+hand-hoe+based+conservation+agriculture+on+soil+fertility+and+maize+yield+in+selected+smallholder+areas+in+Zimbabwe&rft.title=Soil+%26+Tillage+Research&rft.issn=0167-1987&rft.date=2013&rft.volume=126&rft.pages=19-25&rft.genre=article