Dragon magazine 133

Dragon issue 133, Descent into Deepearth, was released in May of 1988. It contained the following articles related to the Forgotten Realms:

The Ecology of the Carnivorous Ape

 * By David Howery. p. 8

Wards Against Evil

 * By Parker Torrence. p. 40

Boosting the Shugenja class's power against spirits.

Dragon's Bestiary / Dungeon Bestiary: All Giant Worms are Not Alike

 * By Kent Colbath. p. 82

Statistics for giant versions of various real-world worms.