George text Yogyakarta Gema media 2018 cetakan pertama xi, 252 hlm George pendidikan 500 500 GEO f 979-3092-64-5 20220105095601 INLIS000000000000471 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)