From Queenpedia.com

Release information Release date Catalog number Country 7" Singles 1979-xx-xx BO-1253 Bolivia 1979-xx-xx 1C 006-62714 Germany 1979-xx-xx 10C 006-062714 Spain 1978-xx-xx SEMI-89000 Yugoslavia

Tracklists 7" Tracklist Side A: Mustapha Side B: Dead On Time 7" Tracklist, Yugoslavia Side A: Mustapha Side B: In Only Seven Days Credits Produced by: Queen and Roy Thomas Baker Charts Notes