?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=P&rft.au=Srinivasa+Rao%2C+P&rft.aulast=Srinivasa+Rao&rft.date=2011&rft.title=Sweet+Sorghum-+dynamics+of+sugar+yield+in+relation+to+different+phenological+stages&rft.genre=proceeding