http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Base of fresh ground water, approximately 3,000 Micromhos, in the Sacramento Valley and Sacramento-San Joaquin Delta, California
Relief shown by contours and spot heights,
"Prepared in cooperation with the California Department of Water Resources."
GPO Cataloging Record Distribution Program (CRDP).
Includes text, location map, and bibliographical references.