TY - RPRT TI - Seismic velocities and geologic logs at seven strong-motion stations that recorded the 1989 Loma Prieta, California, earthquake; Part IV AU - James F. Gibbs AU - Thomas E. Fumal PY - 1994 DO - 10.3133/ofr94552 UR - https://pubs.usgs.gov/publication/ofr94552 ID - ofr94552 ER -