?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=L&rft.au=Briggs%2C+L&rft.aulast=Briggs&rft.atitle=Organic+material+flows+within+a+smallholder+highland+farming+system+of+South+West+Uganda&rft.title=Agriculture%2C+Ecosystems+and+Environment&rft.date=2002&rft.volume=89&rft.pages=191-212&rft.issue=3&rft.genre=article