Empirical analysis of critical mass data involving enriched uranium metal in water /

"Unclassified"--Cover.

Drinking-water quality and variations in water levels in the fractured crystalline-rock aquifer, west-central Jefferson County, Colorado /

Mode of access: Internet.

A mass balance accounting procedure for estimating contributions to water quality /

Bibliography: p. 12.

Method of analysis and quality-assurance practices for determination of pesticides in water by solid-phase extraction and capillary-column gas chromatography/mass spectrometry at the U.S. Geological Survey California District Organic Chemistry Laboratory, 1996-99 /

Mode of access: Internet.