?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.isbn=92906643309&rft.date=2001&rft.btitle=Towards+Sustainable+Sorghum+Production%2C+Utilization%2C+and+Commercialization+in+West+and+Central+Africa+Proceedings+of+a+Technical+Workshop+of+the+West+and+Central+Africa+Sorghum+Research+Network&rft.tpages=174&rft.genre=book