Mather, Jean P.Barbosa, Frederico L. M.2021-01-152022-02-032021-01-152022-02-031972https://hdl.handle.net/11124/175722Includes bibliographical references.masters thesesengCopyright of the original work is retained by the author.Tungsten ores BrazilTungsten mines and mining -- Economic aspects -- BrazilFinancial analysis of Tungsten deposits in Northeast BrazilText