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    Classification of Japanese rivers by heavy metals in bottom mud

    Bottom mud was collected from the upper and lower reaches of 92 rivers in Japan to determine the distribution of 0.5N-HCI-soluble heavy metals. The average concentrations of Cu, Zn, Pb, and Cd in the mud from ...

    Fumi Tada, Hideo Nishida, Masaya Miyai, Shizuo Suzuki in Environmental Geology (1982)