TY  - GEN
AU  - Prata, Stephen
TI  - Advanced unix
SN  - 8170291070
U1  - 681.3.066 
PY  - 1986///
CY  - New Delhi
PB  - BPB
KW  - UNIX
KW  - Operating system1740
KW  - 681.3.066
ER  -