About MIYABARA YUICHI
About 信州大 山岳科研
About 信州大学山地水環境教育研究センター研究報告
About lake
About water quality survey
About concentration determination
About sampling
About transparency
About dissolved oxygen
About suspended solids
About Ammonia
About COD
About measurement data
About Nagano prefecture
About lake pollution
About Lake Suwa
About total phosphorus
About total nitrogen
About index number
About Water Pollution
About tributary
About Limnology,potamology
About Water quality research and measurement in general
About 諏訪湖
About 調査