You can use specialized chemistry or science reference works on the online guide, Reference Sources for Chemistry and Chemistry-Related Questions.
Use the guide's Table of Contents: If your topic is about pesticides, you might look at the "toxicology" and "health" sections of the guide. Ask a librarian for suggestions.

On the E-Resources for Articles & Reference page, select "Health & Medicine," "Environmental Science," or "Sciences" under Browse e-resources by subject if you have a topic related to one of these broader topics.

You may also want to use: Gale Virtual Reference Library Subject encyclopedias and other reference works.
Oxford Reference Online Dictionaries, handbooks, and encyclopedias.
Stat!Ref Online Medical Database Medical reference works.

Last updated: May 6, 2011
A joint project of Austin Community College Chemistry Department and Library Services, Austin, TX