Status review of Astragalus barrii, U.S.D.A. Forest Service, Region 1, Custer National Forest, Montana ; prepared by Lisa Ann Schassberger Roe, Lisa Schassberger. creator Montana Natural Heritage Program. contributor text book Helena, Mt Montana Natural Heritage Program [1988] 1988
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ENG Cover title. "Order No. 43-0355-8-0299" Abridged. Astragalus barrii Barr's milkvetch Botany Custer National Forest (Mont. and S.D.) Rare plants 583.322 https://www.biodiversitylibrary.org/bibliography/26961 26642352 10.5962/bhl.title.26961 Mt