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August 21

21
21 August 1252
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Selamat Memperingati Maulid Nabi Muhammad SAW

Selective Leaching (Dealloying): Ketika Unsur Paduan Larut Secara Selektif

DIRGAHAYU REPUBLIK INDONESIA KE-81

Hydrogen Induced Cracking (HIC): Retak Internal pada Baja Akibat Paparan Hidrogen