Note: Subseries of J'ai Lu do not have an independent numbering from the main catalog, and as such appear nonsequential, with the same title having the same number across series. Used (for now) indifferently for SF or Fantasy titles, in order to separate titles published in a "genre" series from the "mainstream" series. Dimensions: at first (until the 90s) 16.5 x 11 cm, then 18 x 11 cm.