na INLIS000000000000798 20210427141415 210427||||||||| | ||| |||| || | 978-979-1078-50-4 010-0421000798 id 004.022 004.022 ZAM m Efvy Zamidra Zam Menembus Keamanan Komputer ed.1 cet 1 Yogyakarta Gava Media 2008 x,197hlm.;ilus.:18cm