TY  - BOOK
AU  - Chopra, Rajiv.
TI  - Operating systems a practical approach: concepts, principles,system programming
SN  - 8121931649
AV  - QA76.76  .C4677 1993
PY  - 2010///
CY  - Ram Nagar,New Dehli
PB  - S.Chand & Co
ER  -