Complex sentence: Renamed Les Cahiers de la BD at the 79th issue (January 1988), the bimonthly went under the direction of Numa Sadoul and changed form from No.84 (January 1989) before disappearing in June 1990 (No.89).
Split into simpler sentences: Renamed Les Cahiers de la BD at the 79th issue (January 1988), the bimonthly came under the direction of Numa Sadoul. As a result, the format changed starting from No.84 (January 1989) before before the fanzine closed its doors in June 1990 (No.89).