Thanks for the comment! The book doesn't use strict D&D races and classes, but rather the high-fantasy archetypes. The clasess such along with the alignments, listed on the stat blocks" are provided to help facilitate gaming quickly.
General races and classes such as half-elf, dwarf, wizard or a fighter are common for many high-fantasy games such as DnD, Pathfinder, GURPS Fantasy or Savage Worlds, and thus can be used universally. That's why there are no DnD or Forgotten Realms branded races such as drows or kenku - although there are dark elves and birdfolk, that could help you find the best equivalent in your setting.