http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Radon, radium, and other radioactivity in ground water
hydrogeologic impact and application to indoor airborne contamination : proceedings of the NWWA Conference, April 7-9, 1987, Somerset, New Jersey
Association of Ground Water Scientists and Engineers (U.S.)
edited by Barbara Graves ; sponsors, Association of Ground Water Scientists and Engineers, U.S. Environmental Protection Agency.
"Coordinated by the National Water Well Association."
Radioactive substances in rivers, lakes, etc