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100   $a20090319d1963----km-y0itay50------ba
101 0 $aeng
102   $aUS
105   $ay-------001yy
200 1 $a<<The >>natural resource content of United States foreign trade$e1870-1955$fby Jaroslav Vanek
210   $aCambridge$cThe M.I.T. Press$d1963
215   $aXVI, 142 p.$d23 cm
500 10$a<<The >>natural resource content of United States foreign trade$943968
610 1 $aRisorse naturali$aCommercio$aStati Uniti d'america$a1870-1955
700  1$aVanek,$bJaroslav$0123109
801  0$aIT$bUNIPARTHENOPE$c20090319$gRICA$2UNIMARC
912   $a000024706
951   $a421/7$b1813$cNAVA2$d2009
996   $aNatural resource content of United States foreign trade$943968
997   $aUNIPARTHENOPE