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Academie Francaise
The official site of the Academie Francaise. Provides information on its role, its history, its members (called "les immortels"), its influence on the French language, and its dictionaries (actual limited online access).
Other
Introductory Sociology: Culture
This page from the Del Mar College is an excellent outline of the topic; it provides a basic definition of the term, culture, as well as significant topics and a bibliography.