Note: The Sun Koh paperbacks are an abridged and textually "modernised" and reordered edition of the 1958-61 Leihbuch edition. Publication dates: Pabel officially published its books and digests on Tuesdays although they were usually available at the newsstands the previous Thursday, in some cases even the preceding Tuesday. This particular series saw two books in August 1978 - and together with the credits in book 1 stating March 1978 the series started on 14 March 1978. From August 1980 Pabel changed the publication schedule from 4-weekly to calender month.