LEADER 02039oam  2200553I  450 
001 9910706901203321
005 20180205161013.0
035   $a(CKB)5470000002458451
035   $a(OCoLC)974933006
035   $a(EXLCZ)995470000002458451
100   $a20170309d1940      ua             0
101 0 $aeng
135   $aur|||||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aTechnology, employment, and output per man in copper mining /$fby Y. S. Leong [and five others]
210  1$aPhiladelphia, Pennsylvania :$cWork Projects Administration, National Research Project :$cDepartment of the Interior, Bureau of Mines,$d1940.
215   $a1 online resource (xvi, 260 pages) $cillustrations
225 1 $aMineral technology and output per man studies ;$vreport no. E-12
300   $a"Work Projects Administration, National Research Project, in cooperation with Department of the Interior, Bureau of Mines."
300   $a"February 1940."
300   $aNo FDLP item number available.
320   $aIncludes bibliographical references.
606   $aCopper mines and mining$zUnited States
606   $aMiners$zUnited States
606   $aMining machinery
606   $aCopper mines and mining$2fast
606   $aMiners$2fast
606   $aMining machinery$2fast
607   $aUnited States$2fast
615  0$aCopper mines and mining
615  0$aMiners
615  0$aMining machinery.
615  7$aCopper mines and mining.
615  7$aMiners.
615  7$aMining machinery.
700   $aLeong$b Yau Sing$f1899-$01412212
712 02$aNational Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.),
712 02$aUnited States.$bBureau of Mines,
801  0$bKUK
801  1$bKUK
801  2$bOCLCF
801  2$bOCLCA
801  2$bGPO
906   $aBOOK
912   $a9910706901203321
996   $aTechnology, employment, and output per man in copper mining$93505118
997   $aUNINA