Published Feb 1977 by Marvel.
"The Private War of Doctor Doom!" Part 4 of 4. Guest-starring the Sub-Mariner. Plot by Gerry Conway. Script by Jim Shooter. Art by Sal Buscema (breakdowns) and Pablo Marcos (finishes). Cover by Jack Kirby and Al Milgrom. In order to stop Attuma's plan for world conquest, the Vision strikes a deal with Doctor Doom! The Avengers join forces with the ruler of Latveria and pursue Attuma into his undersea lair! At the same time (and with guidance from the Beast), Prince Namor, Wonder Man, and the Whizzer zero in on Attuma's citadel too! And in the depths of the Atlantic Ocean, Earth's Mightiest Heroes and the Avenging Son battle Attuma and Tyrak for the freedom of the world! Fortunately, Doctor Doom is there to help the good guys...or does the good doctor have something else in mind? Cameo appearance by Namorita. (Notes: Tyrak returns in Avengers 172. A subplot from this story involving Captain America continues in Super-Villain Team-Up 10.) 32 pages Cover price $0.30.