The Mysterious Planet by Lester Del Rey 1978 First Ballantine Edition

The Mysterious Planet by lester del rey vintage sci fi 1978

The Mysterious Planet by Lester Del Rey (Del Rey Book 1978)

The Mysterious Planet by Lester Del Rey 1978 Del Rey Paperback

THE MYSTERIOUS PLANET by Lester Del Rey (Del Rey PB Printing 1978) Sci-Fi

Rocket Jockey By Lester Del Rey Ballantine PB Book Sci-fi SFF Space Travel 1978.