Almuric is a "planetary romance" by Robert E. Howard in which the main character, Esau Cairn, is transported from Earth to another world where he fights apelike humans, winged demons, and other monsters.

This story was serialized after Howard's death and, frankly, it's not good. I question whether he really wrote it or whether someone else played ghostwriter with his notes. The plot is thin and filled with freakish (and convenient) coincidences. Some good elements are present, but without Howard's usual rich treatment. Unfortunately, while I love Howard's Conan and Kull stories, I can't recommend this one.

P.S. The name of the planet is repeatedly omitted and there are a couple of small typos.