1. Geology and hydropetrology of the Big Clifty sandstone and Beech Creek limestone aquifer system at the ammunition burning ground: Naval Surface Warfare Center, Crane, Indiana;Barnhill;Geol. Surv., Open File Rep.,1994
2. Ground-water Microbiology and Geochemistry;Chapelle,1993
3. Fryar, A., 1996. Personal communication.
4. Sources and concentrations of nitrate-nitrogen in groundwater of the Central Platte region, Nebraska;Gormly;Ground Water,1979
5. Chemistry of the Elements;Greenwood,1984