TY  - BOOK
AU  - Hansen,Per Brinch
TI  - Operating system principles
SN  - 0876921357 :
U1  - 001.6425 
PY  - 1973///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Operating systems (Computers)
KW  - Computer programming
KW  - Management
N1  - Includes bibliographical references and index
ER  -