000			003490000a22001450004500
245			_aTelecommunication engineering
100			_aIzsak, Miklos, ed.
250			_a3d rev. ed.
260			_aBudapest _bBudavox Telecom Foreign Trading Co. _c1971
300			_a1009 p.
500			_adiagrams
080			_a621.39 _bI9
041			_aEN
942			_cBK
999			_c94820 _d94820