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100   $a20090227d1969----km-y0itay50------ba
101 0 $aeng
102   $aUS
105   $ay-------001yy
200 1 $aInvention, growth, and welfare$ea theoretical treatment of technological change$fWilliam D. Nordhaus
210   $aCambridge (Mass.)$cThe MIT press$dc1969
215   $aXIV, 168 p.$d24 cm
225 2 $aMIT monographs in economics$v10
410  0$12001$aMIT monographs in economics
500 10$aInvention, growth, and welfare$944543
676   $a658.57$v19$9Gestione della produzione. Ricerca e sviluppo.
700  1$aNordhaus,$bWilliam D.$0106474
801  0$aIT$bUNIPARTHENOPE$c20090227$gRICA$2UNIMARC
912   $a000023707
951   $a640/1$b3149$cNAVA2
996   $aInvention, growth, and welfare$944543
997   $aUNIPARTHENOPE