000
002940000a22001090004500
245
_a
PABX purchase and installation : a practical handbook for manager
100
_a
Rodgers, Derek
260
_a
London
_b
Telecommunications Press
_c
1985
080
_a
621.395
_b
R6
041
_a
EN
942
_c
BK
999
_c
117506
_d
117506