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2. Alexander, R.R., 1987. Ecology, silviculture, and management of the Englemann spruce–subalpine fir type in the central and southern Rocky Mountains. USDA Forest Service Agriculture Handbook no. 659, Washington, DC.
3. Determining the direction of destructive winds in a Rocky Mountain timber stand;Alexander;J. For.,1955
4. A windfall problem;Baker;For. Quart.,1915
5. Patterns of secondary succession in a mangrove forest of southern Florida;Ball;Oecologia,1980