?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.isbn=92-9066-418-5&rft.date=2000&rft.btitle=Legumes+in+rice+and+wheat+cropping+systems+of+the+indo-gangetic+plain+-+constraints+and+opportunities&rft.genre=book