text Jakarta Karya Nusantara 1980 ind ix, 179 hlm. : ilus. ; 21 cm. Winardi Bibliografi : hlm. 179-180 Analisis sistem 001 20150601102434.0 YOGYA-02090000004510 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)