?url_ver=Z39.88-2004&rft_id=10.1088%2F1755-1315%2F344%2F1%2F012008&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=L.P.&rft.au=Wong%2C+L.P.&rft.aulast=Wong&rft.issn=17551307&rft.title=Optimization+of+ultrasound+irradiation+for+palm+oil+mill+effluent&rft.date=2019&rft.genre=proceeding