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100   $a20021021d1999----km-y0itay50------ba
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200 1 $a<<The >>economics of increasing returns$fedited by Geoffrey Heal
210   $aCheltenham$cElgar$d1999
215   $a595 p.$d32 cm
225 1 $a<<The >>international library of critical writings in economics$d110
702  1$aHeal,$bGeoffrey M.
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996   $aEconomics of increasing returns$9694057
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