?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=T&rft.au=Abraha%2C+T&rft.aulast=Abraha&rft.inst=Royal+Veterinary+and+Agricultural+University(Denmark)&rft.date=1999&rft.title=Selection+methods+and+genetic+variability+for+traits+related+to+drought+resistance+in+sorghum&rft.degree=Masters