General topic categories and their corresponding Library of Congress catalog numbers are listed below.
The following are sample Library of Congress subject headings useful for finding materials about France and the French language in the Jerry Falwell Library catalog and databases.
French Language - Dictionaries
French literature - 18th century (or desired century)
French literature - Women authors - History and Criticism
French Poetry - 20th century (or desired century)
Surrealism (Literature) - France
If you find an item that is useful for your topic, check to see what other subject terms were assigned to it. You can use those terms to expand your search.
Example:
Collins French Dictionary Plus
The New Oxford Companion to Literature in French by 
The Oxford French Business Dictionary by 
Encyclopedia of Contemporary French Culture by 
French Business Dictionary by 
Larousse Advanced Dictionary by