TY - RPRT TI - Geologic and structure maps of the Wallace 1 degree by 2 degrees quadrangle, Montana and Idaho: A digital database AU - Jack E. Harrison AU - Allan B. Griggs AU - John D. Wells PY - 1986 DO - 10.3133/i1509a UR - https://pubs.usgs.gov/publication/i1509A ID - i1509A ER -