thanks, but i found it meself! monster manual p. 49. between all that flipping between the mm, mm II, and ff, back and forth between de for derro and dw for dwarf, i somehow missed it....
The Slayer's Guide is the 3E version. Underdark Adventure Guide by Goodman Games uses the 3E version although it is advertised as a 3.5E product (and it's worth avoiding anyway as it's not the most useful or well-designed book ever produced).