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101 0 $aeng
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200 1 $aMacroeconomic systems$econstruction, validation and applications$fD. W. Challen and A. J. Hagger
210   $aLondon [etc.]$cMacmillan$d1983
700  1$aChallen,$bDw.$0229843
702  1$aHagger,$bAlfred James
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