Principles of a resource/reserve classification for minerals /

Bibliographic Details
Corporate Authors:	United States. Bureau of Mines (Author), Geological Survey (U.S.) (Author)
Format:	Government Document eBook
Language:	English
Published:	[Reston, Virginia] : United States Department of the Interior, Geological Survey, 1980.
Series:	Geological Survey circular ; 831.
Subjects:	Minerals > Classification. Mines and mineral resources. United States. Classification.
Online Access:	https://purl.fdlp.gov/GPO/gpo111660

Description
Item Description:	"A revision of the classification system published as U.S. Geological Survey Bulletin 1450-A."
Physical Description:	1 online resource (iii, 5 pages) : illustrations.