?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=110094002&rft.au=SIGIT+PURNOMO%2C+110094002&rft.aulast=SIGIT+PURNOMO&rft.inst=INSTITUT+TEKNOLOGI+NASIONAL+yOGYAKARTA&rft.title=ANALISA+CURAH+HUJAN+RENCANA+PADA+DAERAH+ALIRAN+SUNGAI+OPAK&rft.date=24+January+2004&rft.degree=Diploma