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How to design jewelry

JEWL Austin, Richard D. How to design jewelry. Gem Guides, 1987
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JEWL Bassman, Theda and Michael Zuni jewelry. Schiffer, 1992
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Hunting lost mines by helicopter.

GOLD Gardner, Erle Stanley MNG Hunting lost mines by helicopter. Morrow, 1965.
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Hardrock gold: a miner’s tale

GOLD Morrison, Tom MNG Hardrock gold: a miner’s tale. University of Oklahoma, 1992
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