000			00318nam a2200133 4500
008			160616s 000 0
080			_a518.6 _bCOH
100			_aCohen, Leon W
100			_aEhrlich, Gertrude
245			_aStructure of the real number systems
500			_aB311 K3
690			_aMathematics
942			_cBK
999			_c4649 _d4649