O'Leary, Timothy J. Computing essentials 2017 : making IT work for you / Timothy J. O'Leary, Linda I. O'Leary, Daniel A. O'Leary - McGraw-Hill Education 2017 26639 ISBN: 9781259921278 Source: Inv-2017-02-06 Subjects--Topical Terms: Computers LC Class. No.: QA / 75