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 _    _    __   __    _  _     _____    ______   
| \  / ||  \ \\/ //  | \| ||  |  ___|| |      \\ 
|  \/  ||   \ ` //   |  ' ||  | ||__   |  --  // 
| .  . ||    | ||    | .  ||  | ||__   |  --  \\ 
|_|\/|_||    |_||    |_|\_||  |_____|| |______// 
`-`  `-`     `-`'    `-` -`   `-----`  `------`

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Text this: STUDI ADSORPSI ION LOGAM Pb(II), Cu(II), DAN Cr(III) MENGGUNAKAN ABU DASAR BATUBARA