TY  - BOOK
AU  - "Elmasri, Ramez."
AU  - A. Gil Carrick and David Levine
TI  - Operating systems: :a spiral approach
SN  - 9780071070942
U1  - 005.43 
PY  - 2010///
CY  - New Delhi
PB  - Tata McGraw Hill Education
ER  -