text Jakarta Gramedia 2007 Cet. 4 ind vii, 123 hlm . : ilus . ; 21 cm Investasi 978-979-27-0031-2 20110208093819251 YOGYA-02110000003116 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)