Janter 1 , Herman Mawengkang 2 , Usman Ba’afai 3 and Nasruddin M. N 2 . 1. Study Program of Natural Resources Management and Environment, Postgraduate School, University of Sumatera… Click to show full abstract
Janter 1 , Herman Mawengkang 2 , Usman Ba’afai 3 and Nasruddin M. N 2 . 1. Study Program of Natural Resources Management and Environment, Postgraduate School, University of Sumatera Utara, Indonesia and Faculty of Engineering, University of Darma Agung, Indonesia. 2. Faculty of Mathematics and Natural Sciences, University of Sumatera Utara, Indonesia. 3. Faculty of Engineering, University of Sumatera Utara, Indonesia. ...................................................................................................................... Manuscript Info Abstract ......................... ........................................................................ Manuscript History
               
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