I have grouped here general reference sources that may be of use, especially in conducting country studies.
These items are located in Watson Library:
The International Year Book and Statesmen's Who's Who
The Statesman's Yearbook
Reference databases that should be useful:
Cross-searchable online database of Oxford University Press subject dictionaries and reference works in the Premium Collection. Each topical division contains the searchable version of the latest edition of published dictionaries and encyclopedias. (Restricted to 5 simultaneous users.)