000			00526nam a2200181Ia 4500
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040			_aMAIN
041			_aEnglish
082			_a621.382 _bELL
100			_aElldin, A.
245			_aAutomatic telephone exchanges based on the link connection principle _bswitch calculations general survey
260			_aSweden _bTelefonaktiebolaget L M ericsson
300			_a47p.
650			_aCommunication engineering
650			_aEngineering
942			_cBK
999			_c23675 _d23675