000 00352nam a2200133Ia 4500
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040 _cJayakar Knowledge Resource Centre
100 _aKnowlton, E N
245 0 _aPepperells progress
260 _bHARVARD UNIERSITY PRESS
_aCAMBRIDGE
_c1948
300 _aX, 511p p.
653 _aECONOMICS
942 _c1
999 _c42121
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