na INLIS000000000002305 N 0010-0317002303 Computing Essentials: Making IT work for you Introductory 2013 O'Leary, Timothy J. 3 rd. ed. New York : McGrawHill 2013 xxvii, 405 hlm. 27 cm 9780077538989 004 O'Le c 004 COMPUTERS 055715112