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040			_cSTCPL
041			_aENG
082			_a330.01 _bERI-E
100			_aRoll, Erich
245		0	_aElements of economic theory / _cby Erich Roll
260			_aLondon : _bOxford University Press , _c1937 .
300			_a276 p. _bHB
650			_aThe economic principle
650			_aThe theory of exchange
650			_aThe theory of production
650			_aThree problems of change
942			_cBK
942			_2ddc
999			_c14306 _d14306