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100   $a20000920d1969----km-y0itay50------ba
101 0 $aita
102   $aIT
200 1 $aTechnology and the Economic Development of the Tropical African Frontier$fThomas R. De Gregori.
210   $aCleveland$aLondon$cThe Press of Case Western Reserve University$d1969.
215   $aviii, 531 p.$d24 cm
610 0 $aAfrica$aSviluppo economico
610 0 $aPaesi in via di sviluppo$aTecnologia
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702  1$aDe Gregori,$bThomas R.
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996   $aTechnology and the Economic Development of the Tropical African Frontier$9455404
997   $aUNINA
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