TY  - BOOK
AU  - Singh ajay
TI  - OPERATING SYSTEM
SN  - 9789380343501
AV  - 005.43 SIA C 
U1  - 005.43 SIA C 
PY  - 2013///-14
CY  - Jaipur
PB  - Ashirwad publications
KW  - Operating system
KW  - INDIA
ER  -