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[null,"1.","Record Nr.",null,"UNINA9910714285103321"]
[null,null,"Autore",null,"Nighman C. E."]
[null,null,"Titolo",null,"Rock drilling / / by C.E. Nighman and O.E. Kiessling"]
[null,null,"Pubbl/distr/stampa",null,"Philadelphia, Pennsylvania : , : Work Projects Administration, National Research Project : , : Department of the Interior, Bureau of Mines, , 1940"]
[null,null,"ISBN",null,"0-259-68724-3"]
[null,null,"Descrizione fisica",null,"1 online resource (xiii, 158 pages) : illustrations"]
[null,null,"Collana",null,"Mineral technology and output per man studies ; ; report no. E-11"]
[null,null,"Soggetti",null,"Rock-drills - United States"]
[{"$nulls":4},"Miners - Effect of technological innovations on - United States"]
[{"$nulls":4},"Labor productivity - United States"]
[{"$nulls":4},"Miners"]
[{"$nulls":4},"Rock-drills"]
[{"$nulls":4},"United States"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","\"Work Projects Administration, National Research Project, in cooperation with Department of the Interior, Bureau of Mines.\""]
[{"$nulls":4},"\"February 1940.\""]
[{"$nulls":4},"No FDLP item number available."]
[null,null,null,"Nota di bibliografia","Includes bibliographical references."]