Necromancer starts with elementalist spell knowledge (and no Frost Bolt book?)
OK, this looks like a doozy:
I rolled up a human female necromancer (falcon sign) and checked my inventory in town: books of Disarm Trap and Calm Monster. Huh, no Frost Bolt?
I read them both and checked spell knowledge:
Burning Hands 50
Calm Monster 27
Disarm Trap 96
Frost Bolt 15
The spell knowledge of BH and FB did not increase when I gained a level.