000			00840nam a2200229zi 4500
005			20210817120614.0
008			970106s1943 a 000 0 eng d
035			_aMX001000058576
050			_aTK6552 _bR4
245	0	0	_aReference data for radio engineers.
250			_a1
300			_avolúmenes
500			_aEds. 1-3, publ. por federal telephone and radio corporation; ed. 4- publ. por international telephone and telegraph corporation.
650		4	_aRadio _vTablas, calculos, etc.
710	2		_aInternational Telephone and Telegraph Corporation
710			_aFederal Telephone and Radio Corporation
264		1	_aNew York : _bInternational telephone and telegraph corporation, _cc1943
336			_atexto _2rdacontent
337			_asin medio _2rdamedia
338			_avolumen _2rdacarrier
999			_c1980 _d1980