TY  - BOOK
AU  - Crowley, Charles 
TI  - Operation systems: a design oriented approach 
SN  - 978-0-07-4633551-3 
U1  - 005.43 CRO  
PY  - 2008///
CY  - Tata mcgraw hill company Ltd 
PB  - New Delhi 
KW  - Operating systems
ER  -