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Physiographic features
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Mountains
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Mountain ranges
(a) Chains of hills or mountains; (b) somewhat linear, complex mountainous or hilly areas. [USGS Feature Class Definitions <
http://geonames.usgs.gov/domestic/feature_class.htm
>]
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Global change research: a focus on mountain ecosystems
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Overview of interdisciplinary research studies in Glacier National Park to understand how this mountain wilderness responds to present climatic variability and other external stressors, such as air pollution, and links to detailed reports.
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