Continuously updated and republished, this work is recognized as a classic in its genre, It remains unique in international 20th Century bibliographies for its ambitious and rigorous view of western philosophical trajectory, written by a single author without a school affiliation. The Catalan edition is offered in a new format based on the last French editions and is presented in three volumes: ?Antiquity and the Middle Ages?, ?The Modern Era? and ?The Contemporary Era?. The bibliography has been systematically renewed, and special efforts have been made to provide ancient and medieval names in correct Catalan.