Distribution and Chemical Speciation of Molybdenum in River and Pond Sediments Affected by Mining Activity in Erdenet City, Mongolia oleh Tsetsgee Solongo, Keisuke Fukushi, Ochir Altansukh, Yoshio Takahashi, Akitoshi Akehi, Gankhurel Baasansuren, Yunden Ariuntungalag, Odgerel Enkhjin, Boldbaatar Davaajargal, Davaasuren Davaadorj, Noriko Hasebe