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[null,"1.","Record Nr.",null,"UNINA9910707362603321"]
[null,null,"Autore",null,"Steven Thomas A (Thomas August), <1917-2013, >"]
[null,null,"Titolo",null,"Geology and fluorspar deposits, Northgate district, Colorado / / by Thomas A. Steven"]
[null,null,"Pubbl/distr/stampa",null,"Washington, D.C. : , : United States Department of the Interior, Geological Survey, , 1960"]
[{"$nulls":4},"Washington, D.C. : , : Government Printing Office"]
[null,null,"Descrizione fisica",null,"1 online resource (v, 323-422 pages, 4 pages of plates) : illustrations, maps"]
[null,null,"Collana",null,"Contributions to economic geology"]
[{"$nulls":4},"Geological Survey bulletin ; ; 1082-F"]
[null,null,"Soggetti",null,"Fluorspar - Colorado"]
[{"$nulls":4},"Geology - Colorado"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[{"$nulls":3},"Livello bibliografico","Monografia"]
[{"$nulls":3},"Note generali","\"Prepared in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund Board.\""]
[{"$nulls":4},"Title from title screen (viewed July 23, 2014)."]
[{"$nulls":3},"Nota di bibliografia","Includes bibliographical references (pages 417-420) and index."]