text Jakarta PT. Gramedia Pustaka Utama 1991 Ind 125 Dj. A. Simarmata Operation Research 000 001.4028 SIM o - INLIS000000000000550 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)