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*019  $bl
*035  $a(EXLNZ-47BIBSYS_NETWORK)990305925424702201
*035  $a(NO-LaBS)15089350(bibid)
*035  $a(NO-TrBIB)030592542
*035  $a030592542-47bibsys_network
*040  $aNO-TrBIB$bnob$ekatreg
*1001 $aMohammed, Saif I. Shah$0(NO-TrBIB)3034197$_35064200
*24510$aFreight rates and productivity gains in British tramp shipping 1869-1950$cSaif I. Shah Mohammed, Jeffrey G. Williamson
*260  $aCambridge, Mass.$bNational Bureau of Economic Research$c2003
*300  $a43, [14] s.$bfig.
*4901 $aWorking paper series / National Bureau of Economic Research$v9531
*7001 $aWilliamson, Jeffrey G.$0(NO-TrBIB)90073233$_24958600
*830 0$aWorking paper series (National Bureau of Economic Research : trykt utg.)$x0898-2937$v9531$w999105437124702201$_13074900
*901  $a80
*999  $aoai:nb.bibsys.no:990305925424702202$b2021-11-14T19:51:05Z$z990305925424702202
^