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| Publisher |
Marvel |
| Writer |
Roy Thomas |
| Penciler |
Wayne Boring |
| Inker |
Tom Palmer |
| Colorist |
Carl Gafford |
| Letterer |
Joe Rosen |
| Cover Artist |
Joe Sinnott |
| Published | February 1979 |
"Crisis on Twin Earths!" Thor travels to Hyperion's world at the request of Hyperion, where Thor and the Squadron Supreme battle against the evil Hyperion and Emil Burbank.
