TY - RPRT TI - Preliminary map showing recently active breaks along the Maacama Fault zone between Hopland and Laytonville, Mendocino County, California AU - E. H. Pampeyan AU - Philip W. Harsh AU - J.M. Coakley PY - 1981 DO - 10.3133/mf1217 UR - https://pubs.usgs.gov/publication/mf1217 ID - mf1217 ER -