Using the correct words to search will help you find relevant information. Different authors and search tools use different words to describe the same concepts, so it is useful to have a list of similar and related terms in your arsenal when you set out to search for relevant information. The process of creating these alternative terms is called brainstorming terms or concept mapping.
EXAMPLE
"social movements" AND "environmental justice"
Browse the Journal of Social Issues
by selecting a year and then an issue (right side).
Encyclopedia of U.S. Labor and Working-Class History by 
