000
00266nam a2200109Ia 4500
008
220201s1993 xx 000 0 eng d
100
_a
DAS (PN)
245
0
_a
INTRODUCTION TO AUTOMATIC TELEPHONY
250
_a
9TH
260
_b
MODERN BOOK AGENCY
_c
1993
942
_2
ddc
999
_c
95727
_d
95727