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Dian Ria Wijayani, 050413002 (2008) PENGARUH PERUBAHAN pH TERHADAP PROFIL AKTIVITAS PROTEOLITIK ENZIM TERMOSTABIL DARI BAKTERI ISOLAT (A II-4) LUMPUR LAPINDO The Effect of pH Change in to the Profile of Proteolytic Activity in Thermostabil Enzymes taken from Lapindo Mud (A H-4) Bacterial. Skripsi thesis, UNIVERSITAS AIRLANGGA.