na INLIS000000000003282 20231020102232 0010-1023000037 ta 231020 0 ind 979-763-122-2 004.4 004.4 SIM p Simarmata Pengamanan sistem komputer / Janner Simarmata Cet. I Yogyakarta : Andi, 2006 xviii, 252p. : ilus. ; 23cm di Rak Komputer Software Simarmata 1970/BBDAPTHT/B/06 1971/BBDAPTHT/B/06