TY - RPRT TI - Photogeologic and reconnaissance geologic map of the Nichols Quadrangle, Rosebud County, Montana AU - R. B. Colton AU - J.L. Klockenbrink AU - M.A. Grosz AU - E.L. Heffern PY - 1984 DO - 10.3133/mf1723 UR - https://pubs.usgs.gov/publication/mf1723 ID - mf1723 ER -