O'Leary, Timothy J. Computing essentilas 2017 making IT work for you Timothy J. O'Leary ; Daniel O'Leary ; and Linda I. O'Leary - New York McGraw-Hill Education 2017 - 407 pages : col. ill ; 27 x 22 cm. Includes glossary and index. ISBN: 9781259921278 Subjects--Topical Terms: Computer applications.Information technology. Dewey Class. No.: 004 O452c 2017