?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=D&rft.au=Thomas%2C+D&rft.aulast=Thomas&rft.atitle=Increasing+animal+productivity+on+small+mixed+farms+in+South+Asia%3A+a+systems+perspective&rft.title=Agricultural+Systems&rft.date=2002&rft.volume=71&rft.pages=41-57&rft.issue=1&rft.genre=article