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| Publisher |
DC |
| Writer |
Otto Binder |
| Writer |
Jerry Siegel |
| Artist |
Jim Mooney |
| Artist |
Al Plastino |
| Cover Artist |
Curt Swan |
| Cover Artist |
George Klein |
| Published | July 1966 |
SUPERMAN VERSUS SUPER CLARK KENT! / THE FOUR HELPLESS HEROES! An atomic explosion seems to split Superman and Clark Kent into separate people, but it's a plot by Professor Vakox to trap Superman in the Phantom Zone. With Superman on a space mission, Supergirl has a day full of emergencies to deal with, but there's a big surprise at the end of it.
