TY  - BOOK
AU  - Beck,Leland L.
TI  - System software: an introduction to systems programming 
SN  - 8178080362
U1  - 005.43 3rd ed.
PY  - 1999///
CY  - Delhi
PB  - Addison wesley
KW  - SYSTEM SOFTWARE
N1  - Includes Contents
ER  -