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003			0STCL
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040			_aSTCL _cSTCL
100			_aSilverman, H.A.
245			_aSubstance of economics
250			_aFirst
260			_c1922
546			_aEnglish
942			_2ddc _cBK
999			_c11648 _d11648
005			20220125165610.0