TY  - BOOK
AU  - O'Leary, Timothy J. 
AU  - O'Leary, Linda
AU  - O'Leary, Daniel A.
TI  - Computing essentials
SN  - 9789353163198
U1  - 004 
PY  - 2018///
CY  - Chennai
PB  - McGraw Hill Education
N1  - Includes index
ER  -