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Niobium and tantalum: indispensable twins

http://pubs.usgs.gov/fs/2014/3054/

Explains why these elements are commonly discussed together, how they are used, where we get them, and prospects for future supply and demand.

by Schulz, Klaus J. and Papp, John F.
U.S. Geological Survey Fact Sheet 2014-3054
This publication is available only as a PDF document.
Related topics:
Economic geology, Metallic mineral resources, Niobium, Tantalum
Alternative formats of this information:
Compatible standard Format
FGDC-CSDGM Text XML JSON
CCM of Project Open Data JSON
ISO 19115 XML
USGS Publications Warehouse [Citation page] - [MODS XML]

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