The title of this story is: “And now… the Space Parasite!” That’s really all you need to know.
For a Hulk comic, it’s better than most. We see Rick Jones contemplating whether to kill Bruce Banner and rid the world of Hulk-that’s got a bit more depth to it than what we’re used to in Hulk books.
Oh, one more thing:
Creators: Gary Friedrich, Marie Severin
Grade: C+. Better-than-average for Hulk, but lesser-than-average for many other Marvel books on sale in 1968.
For the complete history of the MU, year by year, go here.