Incredible Hulk #173 (Marvel, 1974 — Cover A)Marvel Comics · Incredible Hulk (1962-1999) · 20 pages · Published 1974-03-01Roy Thomas — WriterHerb Trimpe — ArtistHerb Trimpe — Cover ArtistHulk becomes a stowaway on Ralph Robert's ship on a mission to test an H-bomb. The Cobalt Man reveals himself to the X-Men.Buy or read this issue on NeonIchiban