Dragon magazine 152

Dragon issue 152. In the darkness dwell things darker still, was released in December of 1989. It contained the following articles related to the Forgotten Realms:

The Ecology of the Umber Hulk

 * By Tony Jones. p. 10

In a Cavern, In a Canyon...

 * By Thomas M. Kane. p. 18

Rules for mining and metallurgy.

The Wanderers Below

 * By Buddy Pennington. p. 28

Random encounter tables for the Underdark.

Servants of the Jeweled Dagger

 * By Eric Oppen. p. 40

The lives and habits of the gray dwarves, or duergar.

Review: FR8: Cities of Mystery

 * By Jim Bambra. p. 81