TY  - BOOK
AU  - Gurjeet Singh
AU  - Dutta, Neha
AU  - Thukral, Sunny
TI  - Operating systems: a concept based approach 
SN  - 9788185044910
U1  - 005.43 
PY  - 2012///
CY  - New Delhi
PB  - UBH Publishers & Distributors
ER  -