TY  - BOOK
AU  - Beck Leland
TI  - System Software
SN  - 0000031657
U1  - 001.642Sy 
PY  - 2000///
CY  - New york
PB  - Addison - Welsey
KW  -  Programming
KW  -  Software
KW  -  System
KW  - Introduction
KW  - Systems programming
ER  -