Some of the most important general bibliographies are multi-volume sets. 1929-current Covers medieval period to present day, divided by place, then by period. Critical and Biographical references for the study of French literature since 1885. Some bibliographies list critical and interpretive writing about works in particular literary genre or period Guide to French Poetry explication . Bibliographie de la litterature francaise du dix huitieme siecle.
Some bibliographies focus on specific groups of writers.
Canadian writers, 1890-1920. Some bibliographies focus on individual writers. Many author bibliographies include both kinds of information. A reference guide, 1940-1990. Bibliographie de ses oeuvres .