text Jakarta Elex Media Komputindo 1987 Cet. 2 ind vii, 48 hlm ilus 21 cm Fx. Sutiono Gunadi Lotus 123 release 3.0 (Program komputer) 001.642 20090227040225.0 YOGYA-02090000063814 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)