proteksi fixed disk, directory, data dan program text Jakarta Elex Media Komputindo 1989 Cet. 2 ind vii, 94 hlm ilus 21 cm Ian Chandra K Watchdog (Program komputer) 001.6424 20090227040224.0 YOGYA-02090000063802 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)