53 books • 17 series
Great Mysteries (Young Telegraph Books) (Info Adventure (Hardcover World)) (Info Adventure (Paperback World))
Ancient China (Journey into civilization) (Journey into Civilization S.) (Jump! History S.)
Ancient Greece (Journey into civilization) (Jump! History S.) (Journey into Civilization S.) (My World)
Aztecs (Interfact S.) (Journey into Civilization S.) (Journey into civilization) (Jump! History S.)