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100   $a20000920d1987----km-y0itay50------ba
101 0 $aita
102   $aIT
200 1 $a<<An >>Introduction to Cost and Production Functions$fDavid F. Heathfield and Sören Wibe.
210   $aBasingstoke$aLondon$cMacmillan$d1987.
215   $aXV, 193 p.$d21 cm
610 0 $aProduzione$aFunzioni
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702  1$aHeathfield,$bDavid Frederick
702  1$aWibe,$bSören
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996   $aIntroduction to Cost and Production Functions$9462432
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