John Gray,Ph.D text Jakarta Gramedia Pustaka Utama 2010 id xv+132hlm;13x20cm 155.2 979-22-0674-4 241224 20241224115134 INLIS000000000016512 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)