TY  - BOOK
AU  - Deitel,Harvey M.
TI  - An introduction to operating systems
SN  - 0201180383
SN  - 817808035
U1  - 005.43 
PY  - 1989///, c1990
CY  - New Delhi
PB  - Pearson Education.
KW  - Operating systems (Computers)
ER  -