The Avengers Vol. 1 (1963-1996) #237

Plot

The Avengers and the web-slinger have stopped the flow of Lava Men at Project Pegasus! That crisis is over, but another one is lurking right around the corner! Moonstone, Blackout, Electro, and the Rhino escaped from their cells during the melee last issue, and now the foursome are planning to sabotage the nuclear research dome! By the time the Avengers best the super-villains and reach the nuclear reactor, it's set for an epic meltdown! At this moment Earth's Mightiest Heroes don't need Spider-Man's brawn; they need Peter Parker's brains! Can the wall-crawler save Project Pegasus from impending disaster? (mycomicshop.com)