@misc{indiciae606738c7c0d2, title = {Physiographic diagrams of Mount St. Helens, Washington showing changes in its summit crater, 1982}, author = {Tau Rho Alpha}, year = {1983}, doi = {10.3133/mf1608}, url = {https://pubs.usgs.gov/publication/mf1608}, note = {Source identifier: mf1608} }