TY - RPRT TI - Maps showing posteruption erosion, deposition, and dome growth in Mount St. Helens Crater, Washington, determined by a geographic information system AU - H. H. Mills AU - G. N. Keating PY - 1992 DO - 10.3133/i2297 UR - https://pubs.usgs.gov/publication/i2297 ID - i2297 ER -