?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.isbn=92-9066-449-5&rft.date=2002&rft.btitle=Improving+Management+of+Natural+Resources+for+Sustainable+Rainfed+Agriculture+&rft.tpages=68&rft.genre=book