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Mojave Desert Gem and Mineral Society
Mississippi Gulf Coast Gem & Mineral Society (MGCGMS)
Mid-Hudson Valley Gem and Mineral Society, Inc.
Mid-Georgia Gem and Mineral Society
Mid-America Paleontology Society (MAPS)
Michigan Mineralogical Society (MMS)
Memphis Archaeological and Geological Society (MAGS)
McPherson Gem and Mineral Club
Maryland Geological Society
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