na YOGYA-02090000046139 20090227031112.0 ind 979-756-144-5 010-020900000046139 004.678 004.678 Ari I DEP ARIYUS, Dony Internet firewall Dony Ariyus Ed. 1 Yogyakarta Graha Ilmu 2006 x, 234 hlm ilus 23 cm Internet YOPDYOG (M) 27-6-2007 1 CB-D.11 2006-270h