TY - RPRT TI - Modified Mercalli Intensity Assignments for the May 16, 1909, Northern Plains Earthquake AU - W. H. Bakun AU - M. C. Stickney AU - G. Rogers PY - 2009 DO - 10.3133/ofr20091184 UR - https://pubs.usgs.gov/publication/ofr20091184 ID - ofr20091184 ER -