text Jakarta Gramedia 2007 ind 262 hlm. ; 21 cm. / W. Gulo Penelitian 001.42 YOPDYOG 20150428144129.0 YOGYA-03110000000296 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)