Here's the table listing the class and level limitations by race or subtype. One of the core additions of Dangerous Dungeons is splitting humans and demi-humans into various sub-types. For a standard OSRIC campaign it offers a number of variations on demi-humans much like the Unearthed Arcanum did for AD&D. For those interested in running a humans-only campaign (classic swords & sorcery) it allows for distinct differences between regional groups in keeping with the source literature - Cimmerians make better barbarians than Stygians who make better sorcerers.
Character Class Level Limitations.doc