?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=LC&rft.au=Campos%2C+LC&rft.aulast=Campos&rft.date=2010&rft.atitle=Slow+sand+filtration+%E2%80%93+A+technology+that+remains+appropriate+for+this+century+and+beyond&rft.volume=2010&rft.title=Water+%26+Sewerage+Journal&rft.pages=29-31&rft.genre=article