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100   $a20030203d1973----km-y0itay50------ba
101 0 $aeng
102   $aUS
105   $ay-------001yy
200 1 $aPostwar productivity trends in the United States, 1948-1969$fby John W. Kendrick$gassisted by Maude R. Pech
210   $aNew York$cNational bureau of economic research$d1973
215   $a369 p.$d24 cm
225 1 $aGeneral series$fNational Bureau of Economic Research$v98
700  1$aKendrick,$bJohn W.$0103375
702  1$aPech,$bMaude R.
801  0$aIT$bUNINA$gRICA$2UNIMARC
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952   $aXV C 69 (98)$b97854$fFGBC
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996   $aPostwar productivity trends in the United States, 1948-1969$9692195
997   $aUNINA