?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.isbn=9290664231&rft.date=2000&rft.btitle=GIS+Application+in+Cropping+System+Analysis+-+Case+Studies+in+Asia%3A+Proceedings+of+the+International+Workshop+on+Harmonization+of+Databases+for+GIS+Analysis+of+Cropping+Systems+in+the+Asia+Region+18-29+August+1997%2C+ICRISAT%2C+Patancheru%2C+India&rft.tpages=104&rft.genre=book