TY  - BOOK
AU  - O'Leary,Timothy J.
AU  - O'Leary,Linda I.
AU  - O'Leary,Daniel A.
TI  - Computing essentials 2019
SN  - 9781260098563
U1  - 004 O45 2019  
PY  - 2019///
CY  - New York : 
PB  - McGraw-Hill Education, 
KW  -  Computers -- Electronic data processing.
N1  - Includes index.; 400-499
ER  -