000
00306nam a2200121Ia 4500
008
220201s1979 xx 000 0 eng d
041
_a
ENG
100
_a
JAIN, ASHOK K
245
0
_a
PRINCIPLES OF TELEGRAPHY
260
_a
LONDON
_b
THAMES AND HUDSON PUBLISHING COMPANY
_c
1979
300
_a
240
942
_2
ddc
999
_c
48717
_d
48717