This issue has variants.
Assistant Editor's Month
in L' Incroyable Hulk (Editions Héritage, 1968 series) #160 (Décembre 1984) [Pages 1-11], #161 (Janvier 1985) [Pages 12-22]
in The Mighty Thor: The Ballad of Beta Ray Bill (Marvel, 1989 series) #[nn] (December 1989)
in Silver Surfer (Play Press, 1989 series) #3 (Dicembre 1989), #3 (Dicembre 1989)
in Obras Maestras (Planeta DeAgostini, 1991 series) #3 - Thor el Poderoso: La Balada de Bill Rayo Beta (Enero 1992)
in Thor Visionaries: Walter Simonson (Marvel, 2000 series) #[1] ([2000])
in Marvel Platinum: The Definitive Thor (Panini UK, 2011 series) #[nn] (2011)
in Thor by Walter Simonson Omnibus (Marvel, 2011 series) #[nn] (2011)
in Walter Simonson's The Mighty Thor: Artist's Edition (IDW Publishing, 2011 series) #[nn] (2011)Ad for the Star Frontiers role-playing game.
Assistant editor's month shenanegans.