1. Standard Methods for the Examination of Water and Wastewater,1985
2. Elimination of fecal coliform bacteria from soil irrigated with municipal sewage lagoon effluent;Bell;J. Environ. Qual.,1978
3. Delaware Agricultural Statistics, 1992;Delaware Department of Agriculture,1993
4. DPI dead-bird composter survey, May, 1994;Delmarva Poultry Industry,1994
5. Hydrology of the Columbia (Pleistocene) deposits of Delaware;Johnston;DE Bull.,1973