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100   $a20000920d1996----km-y0itay50------ba
101 0 $aita
105   $ay-------001yy
200 1 $a<<The >>economics of agricoltural prices$fPeter G. Helmberger, Jean-Paul Chavas
210   $aNew Jersey$cPrentice Hall$dc1996
215   $a256 p.$d23 cm
700  1$aHelmberger,$bPeter G.$0140671
702  1$aChavas,$bJean-Paul
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952   $aQ1.104$b6657$fDECTS
959   $aDECTS
996   $aEconomics of agricoltural prices$9500940
997   $aUNINA
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