TY  - BOOK
AU  - SINGH (Charanjeet)
TI  - Operating system concepts
SN  - 9789327293371
U1  - 003 SINO 
PY  - 2018///
CY  - Ludhiana
PB  - Kalyani Publishers
KW  - system
KW  - Operating
KW  - concepts
ER  -