@techreport{oai:soar-ir.repo.nii.ac.jp:00016800,
 author = {中本,  信忠},
 month = {Mar},
 note = {We had a custom of drinking raw water. Recently，p roblems like odor problem，trihalomethane production，pa rasites etc. have been appeared in tap water. These problem shave been reported in the area where is supplied by the modem system of rapid sand filtration，Af ter the trihalomethane problem in USA，, Article, 環境科学年報21:1-18(1999)},
 title = {緩速ろ過の誤解と再認識},
 year = {1999}
}