You can use dictionaries, encyclopedias and other reference works to:
Some useful dictionaries and encyclopedias are listed below.
Use the Library subject guides for other subjects to discover some of the subject-specific dictionaries and encyclopedias available.
The Library also subscribes to two reference packages from Oxford University Press that cover a number of subject areas in the social sciences, and might be useful to search for introductory articles on a range of topics. See details below: