If you can't find an encyclopedia, dictionary or textbook article on your topic, try using broader keywords or ask a for help. For example, if your topic is "global warming," consider searching for an encyclopedia on the environment.
Once you have identified keywords, the next step is to find background information on your topic.
Background information serves many purposes:
Background information can be found in:
These sources are often listed on the "Find Books" tab of our research by subject guides. You can browse a complete list of the Library's guides by visiting the "Research by Subject" homepage.