Complex sentence: From January 1917 to October 1918 the journal restarted as a monthly, but publication then stopped again until January 1920, when it reappeared as "Africa and Orient Review" published from its offices at 158 Fleet Street, London, until December 1920.
Split into simpler sentences: From January 1917 to October 1918, the journal restarted as a monthly, but publication stopped until January 1920. It was revived as "Africa and Orient Review," published from its offices at 158 Fleet Street, London, until December 1920.