Baseline survey for Astragalus barrii Barneby (Barr's milkvetch) and Physaria didymocarpa var. lanata A. Nels (wooly twinpod) in eastern Big Horn and southwestern Rosebud Counties, Montana 2002
"February 2002." Includes bibliographical references (p. 8) Executive summary -- Introduction -- Study area -- Methods -- Results -- Discussion and management considerations -- References
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