@techreport{oai:soar-ir.repo.nii.ac.jp:00016869,
 author = {渡辺,  義人},
 month = {Mar},
 note = {Article, 環境科学年報16:81-88(1994)},
 title = {陽イオンと溶存けい酸の当量比に基づく自然水の水質区分の試み},
 year = {1994}
}