Triplanetary - Lensman Series Book 1

Description from the back of the book

In Triplanetary, battle is joined for the control of the universe. The Arisians, benevolent humaniods who have declared themselves Guardians of Civilization, war with the Eddoreans, shapeless, malevolent beings, hungry for power at any price. They fight on both physical and mental levels, wielding weaponry of inconceivable destructiveness.

And their battleground is a tiny planet in a remote galaxy: Earth. The swamping of Atlantis, the fall of Rome, the wars that rack the world and blaze through space - all may seem historical accidents to the men involved, but each in reality is a move in a savage universe-wide power struggle...

Condition - Good, signs of wear including creases on the covers and spine, sun bleaching on the spine. Yellowing pages and age spots.