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Results: 2
Colored gemstones of Africa
Authors: GRAY Michael
Citation: Gray Michael, Colored gemstones of Africa, Rocks and minerals , 77(2), 2002, pp. 108-119
Transparent gemstones of Nevada
Authors: GRAY Michael
Citation: Gray Michael, Transparent gemstones of Nevada, Rocks and minerals , 74(6), 1999, pp. 368-369
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