000			00668nam a2200217 a 4500
001			00222739
003			003
005			20240602100221.0
008			940926s1974 enka eng
020			_a0198593465
100	1	0	_aSmith, Sydney F.
245	1	0	_aTelephony and telegraphy A : _ban introduction to instruments and exchanges (step-by-step and common control) / _cby Sydney F. Smith.
250			_a2nd ed.
260			_aLondon : _bOxford University Press, _c1974.
300			_axv, 282 p. : _bill.
650		0	_aCommunication engineering.
650		0	_aTelecommunication systems.
650		0	_aTelephone sysytems.
650		0	_aTelegraph.
942			_2ddc
999			_c21873 _d21873