TY - RPRT TI - Map of alluvial valley floors and strippable coal in forty-two 7 1/2-minute quadrangles, Big Horn, Rosebud, and Powder River Counties, southeast Montana AU - Harold E. Malde AU - J. Michael Boyles PY - 1976 DO - 10.3133/ofr76162 UR - https://pubs.usgs.gov/publication/ofr76162 ID - ofr76162 ER -