000			00527nam a2200169Ia 4500
020			_a0070247609
082			_a621.385 _bGRH
100			_aGriesinger, Frank Kern _999875
245			_aHow to cut costs and improve service of your telephone telex twx and other telecommunications _cFrank kern Griesinger
260			_aNew York: _bMcGraw-Hill, _c1974.
300			_b. _a310p.
500			_aHB
546			_aEng
650			_atelephone-Economic aspects _999876
650			_aTelecommunication- Economic aspects _999877
942			_cBK
999			_c1217 _d1217