na INLIS000000000000799 20210427141415 210427||||||||| | ||| |||| || | 978-979-1078-67-2 010-0421000799 id 004.022 004.022 ZAM p Efvy Zamidra Zam Panduan Praktis Memblokir Situs Porno ed.1 cet 1 Yogyakarta Gava Media 2009 viii,151hlm.;ilus,:18cm Computer program