Pocket Books 1974. Slightly warped with light water staining on cover, otherwise good vintage condition. "Herovit's World - a place of terror where alien forces struggle for power. Kirk Poland is a man of action - a man from another dimension. It was he who created Mack Miller, survey-leader and superman, hero of the space opera. In another guise, though, Poland is the writer, Jonathan Herovit. Who wants Herovit's world? Certainly not Poland. And maybe not even Herovit himself. In the ruins of a man's mind, the battle for supremacy has begun. 'This is Kirk Poland. Get this straight from the outset: I'M TAKING OVER...'"