TY  - BOOK
AU  - Alexander, Tom ; Mathews, Tom 
TI  - Computer Operating System
SN  - 9788183423182
U1  - 004.22/ALE/Com 
PY  - 2016///
CY  - New Delhi
PB  - Crescent Publishing Corporation
KW  - Operating System
KW  - computer science
KW  - Bachelor of Computer Application
ER  -