TY - RPRT TI - High-resolution digital elevation model of Mount St. Helens crater and upper North Fork Toutle River basin, Washington, based on an airborne lidar survey of September 2009 AU - Adam R. Mosbrucker PY - 2014 DO - 10.3133/ds904 UR - https://pubs.usgs.gov/publication/ds904 ID - ds904 ER -