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Western gem hunters atlasrock locations from California to the Dakotas and British Columbia to TexasBook由 Johnson, Cy (Humphrey Cyril), 1905-
出版 1971 -
Idaho gold & gems maps then and nowgoldsilver agate topaz corundum quartz garnet jasper opal petrified wood feldsparMap出版 2000
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Oregon goldsilver & gems maps then and nowgoldsilver agate apache tears bloodstone thunder eggs tourmaline jadeMap出版 2000