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 Date: 2011-10-05 02:26:29Geography of Arizona Geography of the United States Western United States Colorado Plateau Arizona Grand Canyon Cylindrospermopsin Earthquake |
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Date: 2011-10-05 02:26:29Geography of Arizona Geography of the United States Western United States Colorado Plateau Arizona Grand Canyon Cylindrospermopsin Earthquake |
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Summary of Earthquake Activity in Arizona for 1988 b y David S . Brumbaugh, Director Arizona Earthquake Information Center Box 5620, Northern Arizona University Flagstaff, AZ 86011