3 1 10 Teknik Keamanan Data dan Informasi Janner Simarmata Primary Author Sriadhi Additional Author Robbi Rahim Additional Author mixed material 9786230102882 Yogyakarta Andi 2019 cover_kriptografi-teknik-keamanan-data-dan-informasi-20250729093236.jpg Janner Simarmata Primary Author Iman Paryudi Additional Author mixed material 9789797631208 Yogyakarta Andi 2006 cover_basis-data-20250722114300.png Janner Simarmata Primary Author mixed material 9797635171 Yogyakarta Penerbit Andi 2006 cover_pemograman-wab-dengan-menggunakan-wml-20250120144854.jpeg