000
00273nam a2200109Ia 4500
008
140122s9999 xx 000 0 und d
082
_a
Karp Harr
100
_a
Karp Harry R
245
_a
Practical applications of data communications
260
_b
_c
1980
942
_c
BK
_2
ddc
999
_c
5104
_d
5104