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South Cascades Arc Volcanism, California and Southern Oregon: Red Bluff to Redding, California, July 20–26, 1989 ,
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Mount Shasta and vicinity:
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Snake River Plain-Yellowstone Volcanic Province: Jackson, Wyoming to Boise, Idaho July 21–29, 1989 ,
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The Yellowstone Plateau—Island Park region:
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Africa's Development Challenges and the World Bank ,
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