Arora, Ashok. Information technology: For 'o' level/ Ahok Arora, Shefali Bansal. - New Delhi : Cyber tech, 2002.. - xii,468 p. : ill.; 24 cm. Include bibliographical references. ISBN: 8178840413 Subjects--Topical Terms: Information technology. Dewey Class. No.: 4.65 / ARI