 | Botany Arizona Gila County Ecology. | (1) |
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 | Flora and vegetation of the Sierra Ancha Experimental Forest, Arizona / by Charles P. Pase and R. Roy Johnson. Pase, C. P., 1926- Fort Collins, Colo. : Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1968. | |
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