?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Wani%2C+S+P&rft.aufirst=S+P&rft.aulast=Wani&rft.date=1994&rft.title=BNF+technology+for+sustainable+agriculture+in+the+semi-arid+tropics&rft.genre=proceeding