Don't know much about your topic? Not sure where to start your research?
Background sources (also called reference sources) are things like encyclopedias, dictionaries, manuals, etc. and are excellent for:
Don't know where to search? Try these reference tools first.
Each of the encyclopedias below is focused on a different area of biology. Read the descriptions to select the one that is right for your information needs.
Use these search tools to search multiple encyclopedias at once.