DC Released January 1977

Superman #307

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$2
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$10
High
$30
Published January 1977
Cover Price $0.30
Pages 32

Cover art by Neal Adams. Krypton--No More!, script by Gerry Conway, pencils by Jose Luis Garcia-Lopez, inks hy Frank Springer; Superman battles the Protector, a mutant villain who is powered by pollution; Supergirl goes on a rampage in the Fortress of Solitude.