Seismic velocities and geological conditions at twelve sites subjected to strong ground motion in the 1994 Northridge, California, earthquake [microform] : a revision of OFR 96-740
- by James F. Gibbs ... [et al.].
- Menlo Park, CA : U.S. Dept. of the Interior, U.S. Geological Survey, 
- Physical description
- i, 142 p. : chiefly ill., maps ; 28 cm.
- U.S. Geological Survey open-file report 99-446.