R. G. Fay

Geohydrology, water quality, and nitrogen geochemistry in the saturated and unsaturated zones beneath various land uses, Riverside and San Bernardino counties, California, 1991-93

A. Christensen, M. Land, R. Anders, 1995 .

Potential for ground-water contamination from movement of wastewater through the unsaturated zone, upper Mojave River Basin, California

L. Duell, R. A. Schroeder, A. Umari, 1993 .

Water quality in the Santa Ana Basin, California, 1999-2001

Tyler D. Johnson, K. Belitz, R. Kent, 2004 .