Dragon magazine 131

Dragon issue 131, Descent into Deepearth, was released in March of 1988. It contained the following articles related to the Forgotten Realms:

The Folk of the Underworld

 * By Eric Oppen. p. 32

The svirfneblin point of view.

The Ecology of the Aboleth

 * By Brandon Crist. p. 36

The Ecology of the Hook Horror

 * By Michael Persinger. p. 42