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https://www.usgs.gov/publications/dispersal-ecology-lodgepole-pine-pinus-contorta-dougl-its-native-environment-related
Dispersal ecology of lodgepole pine (Pinus contorta Dougl.) in its native environment as related to...
Lodgepole pine (Pinus contorta Dougl.) covers extensive areas of the mountains of western North America. It has evolved into four subspecies, each adapted to...