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Thor #194 (Dec. 1971 by Marvel Comics). "This Fatal Fury!" Script by Gerry Conway, pencils by John Buscema, inks by Sal Buscema. Appearances by Sif, Balder, Hogun, Fandral, Volstagg, Karnilla, Loki, and Odin. John Buscema/John Romita Sr. cover.