TY - RPRT TI - Geologic maps of pyroclastic-flow and related deposits of the 1980 eruptions of Mount St. Helens, Washington AU - M. A. Kuntz AU - P. D. Rowley AU - N. S. MacLeod PY - 1990 DO - 10.3133/i1950 UR - https://pubs.usgs.gov/publication/i1950 ID - i1950 ER -