Items where Author is "Ridha, Mu'tashain"
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Ernawati, Rika and Ridha, Mu'tashain and Cahyadi, Tedy Agung and Amri, Nur Ali and Nursanto, Edy Evaluation of the Status of Baseline Sediment Quality standardsfor Lake Sarantangan, Singkawang City, West Kalimantan. -. (Unpublished)