text Jakarta Indera 1982 ind 135 hlm ilus 21 cm Wirasto Matematika Ekonomi 510.7 YOPDYOG 20090227023012.0 YOGYA-02090000019626 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)