The HERO database includes citations of the research that EPA scientists use to develop environmental risk assessments. It can be searched by type of air pollutant, chemical, health and environmental effect, author, title, year of publication, and journal title, among other criteria. Results can be saved in a bibliography or exported into citation management software. Check out this resource from our Health Risk Assessment Resources web page at:
http://www.lib.berkeley.edu/PUBL/risk.html