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Bureau of Mines / Minerals yearbook: Metals, minerals, and fuels 1972
Year 1972, Volume 1 (1972)

Ampian, Sarkis G.
Clays,   pp. 301-327 ff. PDF (2.9 MB)


Page 311

CLAYS 
311 
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 963 1965 1969 1971 
Figure 3.—Fuller's earth sold or used by domestic producers for specified
uses. 


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