John Gray, Ph.D text Jakarta pt gramedia pustaka utama 2005 id 260 HLM,;21 X 14 CM 155.3 9796058472 241224 20241224132947 INLIS000000000030393 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)