1. U.S. EPA. Air Quality Criteria for Lead. EPA-600/8-83/ 028aF-dF. Research Triangle Park NC:U.S. Environmental Protection Agency 1986.
2. U.S. EPA. Air Quality Criteria for Lead: Supplement to the 1986 Addendum. EPA-600/8-89/049F. Research Triangle Park NC:U.S. Environmental Protection Agency 1990.
3. ATSDR
. The Nature and Extent of Lead Poisoning in Children in the United States: A Report to Congress. Atlanta:Agency for Toxic Substances and Disease Registry 1988.
4. U.S. Centers for Disease Control. Preventing Lead Poisoning in Young Children: A Statement by the Centers for Disease Control-October 1991. Atlanta:U.S. Department of Health and Human Services 1991.
5. Weitz S Clickner RP Blackburn A Buches D. Comprehensive and Workable Plan for the Abatement of Lead-Based Paint in Privately Owned Housing. Washington:U.S. Department of Housing and Urban Development 1991.