http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Proceedings, AWWA Distribution System Symposium
Los Angeles, California, February 24-27, 1980
AWWA Distribution System Symposium (1980 : Los Angeles, Calif.)
sponsored by the Distribution Division of the American Water Works Association.