000
003140000a22001330004500
245
_a
Data communications & teleprocessing systems
100
_a
Housley, T.
250
_a
2d ed.
260
_a
New Jersey
_b
Prentice Hall
_c
1987
020
_a
0131974351
080
_a
004.7
_b
H6
041
_a
EN
942
_c
BK
999
_c
120528
_d
120528