000
002940000a22001210004500
245
_a
Telecommunications and the computer
100
_a
Martin, James
260
_a
Englewood Cliffs
_b
Prentice Hall
_c
1969
300
_a
470 p., ill.
080
_a
621.39:681.3
_b
M3
041
_a
EN
942
_c
BK
999
_c
94829
_d
94829