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Bureau of Mines / Minerals yearbook metals, minerals, and fuels 1971
(1971)
Mitko, Francis C.
Platinum-group metals, pp. 985-994
Page 985
![[page image]](http://images.library.wisc.edu/EcoNatRes/0022/0001/M/0993.gif)
As a work of the United States government, this material is in the public domain.| For information on re-use see: http://digital.library.wisc.edu/1711.dl/Copyright




