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Books by Peter C. Keller

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2 books found
Gemstones of East Africa
Gemstones of East Africa
By: Peter C. Keller
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Died, Campbell R. Bridges, 71.(Notes from the Editors)(In memoriam): An article from: The Mineralogical Record
Died, Campbell R. Bridges, 71.(Notes from the Editors)(In m…
By: Peter C. Keller, Wendell E. Wilson, Dona Leicht
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