TY - RPRT TI - Seismic velocities and geological conditions at twelve sites subjected to strong ground motion in the 1994 Northridge, California, earthquake AU - J. F. Gibbs AU - J. C. Tinsley AU - W. B. Joyner PY - 1996 DO - 10.3133/ofr96740 UR - https://pubs.usgs.gov/publication/ofr96740 ID - ofr96740 ER -