O'Leary, Daniel A. Computing essentials : making IT work for you : introductory 2021 / Daniel A. O'Leary, Timothy J. O'Leary, Linda I. O'Leary - McGraw-Hill Education 2021 28812 ISBN: 9781260570755 Source: Rec-2020-12-30 Subjects--Topical Terms: Computers LC Class. No.: QA / 75