About ISHIBASHI YUKO
About 福岡県保健環境研
About KUMAGAI HIROSHI
About 福岡県庁
About IMATO TOSHIHIKO
About paddy field
About agricultural water
About metal
About aluminum
About iron
About manganese
About zinc
About arsenic
About lead
About copper
About dissolved component
About water quality test
About water quality survey
About Heavy-metal research and measurement
About 水田
About 農業用水
About 金属類
About 割合