Implementasi teknik pixel indicator dalam menyembunyikan pesan pada citra digital = Implementation of pixel indicator technique to hide secret message in digital image / Syahidah A'Yun

Cepat tetapi baik

Refresher course in Gregg shorthand simplified / Madeline S. Strony, M. Claudia Garvey, Howard L. Newhouse

Gregg shorthand for colleges speed building/ Scot Ober

Your first year of teaching shorthand and transcription