TY  - BOOK
AU  - Gupta, R.Kumar.
AU  - Chaturvedi, A.K. jt.au.
TI  - Textbook of operating system
U1  - 621.381952 
PY  - 2004///
CY  - Delhi
PB  - Dhanpat Rai & Co.
KW  - Operating systems
ER  -