text Jakarta Dinastindo [1990] ind 20 hlm ilus 21 cm Santoso Yusuf Virus (Program Komputer) 001.6424 20090227024448.0 YOGYA-02090000030250 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)