PPKN KLS IV YUSNAWAN LUBIS text Jakarta pusat kurikulum dan perbukuan 2021 1 011 011 YUS b 20241128111322 INLIS000000000572472 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)