000			003700000a22001450004500
245			_aTelecommunication networks
100			_aLajtha, Gyorgy
100			_aZoltan, Soos
260			_aBudapest _bBudavox _c1970
300			_a3 v.
500			_a(203 p.; 111 p.; 156 p.); 015287 - v.1, 015288 - v.2, 015289 - v.3
080			_a621.39 _bL3
041			_aEN
942			_cBK
999			_c94822 _d94822