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Hughes, H. Herbert / Minerals yearbook 1940
Year 1939 (1940)
Johnson, Bertrand L.; Warner, K. G.
Talc, pyrophyllite, and ground soapstone, pp. 1321-[1332]
Page 1322
![[page image]](http://images.library.wisc.edu/EcoNatRes/EFacs/0054/0001/L/1332.gif)
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