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a Family 31 Dec 2010 | 03:32 pm

update Bahan UAS 20 Dec 2010 | 07:39 pm

File Ventilasi (dari roy) SMK3 Astra (1) SMK3 Astra (2) Bahan UAS Chemical Safety NB : Bahan Chemical Safety masih kurang chemical safety di lab (materinya ada di cahaya *klo gk salah*)

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