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  _____     _____     ______    _____     _  _   
 / ____||  |  ___||  /_   _//  |  ___||  | \| || 
/ //---`'  | ||__    `-| |,-   | ||__    |  ' || 
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  `----`   `-----`     `-`'    `-----`   `-` -`

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發送短信 : ANALISIS KINEMATIKA KESTABILAN LERENG BATUPASIR FORMASI BUTAK