Published Nov. 11, 1966 by Ace.
Planet of Exile
The Earth colony of Landin has been stranded on Werel for ten years. But ten of Werel's years are over 600 terrestrial years. The lonely & dwindling human settlement is beginning to feel the strain. Every winter --a season that lasts for 15 years-- the Earthmen have neighbors: the humanoid hilfs, a nomadic people who only settle down for the cruel cold spell. The hilfs fear the Earthmen, whom they think of as witches & call the farborns. But hilfs & farborns have common enemies: the hordes of ravaging barbarians called gaals & eerie preying snow ghouls. Will they join forces or be annihilated?