?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=W+D&rft.au=Dar%2C+W+D&rft.aulast=Dar&rft.atitle=Dryland+agriculture+in+Semi-arid+tropics%3A+Constraints+and+opportunities&rft.title=Indian+Journal+of+Dryland+Agriculture+Research+and+Development&rft.issn=0971-2062&rft.date=2011&rft.volume=26&rft.pages=1-7&rft.issue=1&rft.genre=article