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"The Mutant Factor!" Guest-starring the Beast. Story, art, and cover by Erik Larsen.
The Amazing Spider-Man and the bouncing blue Beast (from the X-Men) team-up to try and discover what the Mutant Factor is!
Cover price $1.75.
Thor (1962 Marvel 1st Series) #323
Conan the Barbarian (1970 Marvel) #136
Godzilla (1977 Marvel) #2
Marvel Fumetti Book (1984)
Marvel Fanfare (1982 1st Series) #27
