About SUZUKI TAKASHI
About 千葉県水質保全研
About MOTOHASHI KEINOSUKE
About 千葉県水質保全研
About 千葉県水質保全研究所年報
About Eichhornia crassipes
About Lake Teganuma
About Lake pollution
About Heavy-metal research and measurement
About Heavy metals and their compounds in general
About ホテイアオイ
About 植栽
About 圃場
About 水中
About 底泥
About 重金属類
About 含量
About 手賀沼