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1957 wholesale quantity price list - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Clyde Robin, 1957)

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Alpine plant communities of the Beaverhead, Gravelly and Snowcrest ranges of Southwest Montana - Cooper, Stephen V. ([USDA Forest Service, Region One], 1990)

The alpine vascular flora and vegetation of Prospect Mountain, front range, Rocky Mountains, Alberta - Mortimer, Patricia R. (University of Alberta, Dept. of Botany, 1978)

The alpine vegetation of Marmot Basin, Jasper National Park, Alberta, and the impact of ski activities upon it - Hamilton, Evelyn Hope, 1954 - (University of Alberta, Dept. of Botany, 1981)

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Alpines, native plants of the National Park Region collected for you - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Frank H. Rose, 1947)

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The Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) ([University of Washington, 1953)

The Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) ([University of Washington, 1954)

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Armillaria in the northern Rockies : pathogenicity and host susceptibility on pristine and disturbed sites - Intermountain Research Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1987)

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Aspen community types of the Intermountain Region - Intermountain Research Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1988)