This is a copy of Fantastic Four #182 published by Marvel Comics in 1977.
Whitman Variant. "Enter: The Mad Thinker!" Plot by Len Wein, Archie Goodwin, and Jim Shooter. Script by Bill Mantlo. Art by Sal Buscema (breakdowns) and Joe Sinnott (finishes). Cover by Ron Wilson and Joe Sinnott. The Reed Richards of Counter-Earth tricks Ben and Johnny into entering the Negative Zone to look for the 'other' Reed! The Thing and the Human Torch find Reed...and Annihilus...and the Mad Thinker's giant android monster! How many bad guys are in this story? Cameo appearances by Tigra, Thundra, and the Impossible Man. 32 pages.