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Thor #250 (Aug. 1976 by Marvel Comics). "If Asgard Should Perish!" Script by Len Wein, pencils by John Buscema, inks by Tony DeZuniga. Appearances by Hogun, Fandral, Volstagg, Sif, Balder, Karnilla, and Hildegarde. Jack Kirby/Joe Sinnott cover.