Near-surface shear wave velocity versus depth profiles, VS30, and NEHRP classifications for 27 sites in Puerto Rico [electronic resource] / by Jack K. Odum ...[et al.].
Mode of access: Internet from the USGS web site. Address as of 11/28/07: http://pubs.usgs.gov/of/2007/1174/pdf/OF07-1174_508.pdf; current access via PURL.
Note
Title from PDF title screen (viewed on July 30, 2007).