Biblioteca Digital

Technical paper.

**Autoria(s):** United States. Bureau of Mines.
Data(s)	31/12/1969
Resumo	a At head of title 453, 457-461, 463, 465- :U.S. Department of commerce ... Bureau of mines ...; 455, United States Department of commerce. Bureau of mines; 456, 462, 464, United States Department of commerce ... Bureau of mines ... Part of the illustrative material is folded. Some numbers are issued in revised editions. Mode of access: Internet.
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Idioma(s)	eng
Publicador	Washington, U.S. Govt. Print. Off.,
Direitos	Items in this record are available as Google-digitized, and as Public Domain. View the access and use profile at http://www.hathitrust.org/access_use#pd-google, and http://www.hathitrust.org/access_use#pd. Please see individual items for rights and use statements.
Palavras-Chave	#Mining industries #Mines and mineral resources
Tipo	text

Acesso ao item digital