Issue 19
Superboy and the Legion of Super-Heroes (1977-) #249
The Legion gets to the bottom of the plant-monster infestation in the sewers.
Creators

From
Superboy and the Legion of Super-Heroes (1977-) Series
The Legion gets to the bottom of the plant-monster infestation in the sewers.

From
Superboy and the Legion of Super-Heroes (1977-) Series