TY  - BOOK
AU  - Deitel H M
AU  -  Choffnes D R
AU  -  Deitel P J
TI  - Operating system.3 Ed
U1  - D6,8(B2895),1, P4 
PY  - 2004///
CY  - Delhi
PB  - Pearson       
KW  - I I C
ER  -