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Diatom evidence of environmental change in wetlands National Park Service Water Resources Division; National Park Service
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1985-12
A 2,500-year record of environmental change in Highlands Hammock State Park (Central Florida, U.S.A.) inferred from siliceous microfossils Journal of Paleolimnology (2013) 49:31–43
2013
Effects of grazing by wild ungulates in Yellowstone National Park National Park Service Water Resources Division; National Park Service
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1984-07
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