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100   $a19980601d1984----km-y0itay50------ba
101 0 $aeng
102   $aNL
105   $a--------00-yy
200 1 $aAggregation in economic research$efrom individual to Macro Relations$fJ. Van Daal, A.H.Q.M. Merkies.
210   $aDordrecht$cD. Reidel$d1984
215   $aXIV, 321 p.$d22 cm
225 1 $aTheory and decision library. An I nternational series. ..$v41
676   $a330.15$v20$zita
700  1$aDaal,$bJan : van$0122202
702  1$aMerkies,$bA.H.q.M.
801  0$aIT$bUNINA$gRICA$2UNIMARC
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996   $aAggregation in economic research$9580060
997   $aUNINA