Book ReviewGems & Gemology, Fall 2014, Vol. 50, No. 3

图书：《肯塔基州玛瑙：联邦州的标志性岩石和矿物珍品》 (Kentucky Agate: State Rock and Mineral Treasure of the Commonwealth) (英语)

Douglas Kennedy

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Books: Kentucky Agate: State Rock and Mineral Treasure of the Commonwealth | Gems & Gemology