Few advanced space humans dared to return to an Earth that had barley survived complete holocaust - for the still-beautiful but mutant infested planet was held in check by deadly Earthwatch sentinels, the elite security force that orbited the desecrated planet - Had humankind survived - Chia Swann was determined to save Earths survivors, despite the lethal and ominous eye of EarthWatch.
Used availability for Jerry Earl Brown's Earthfall
January 1990 : USA Mass Market Paperback
Author(s): Jerry Earl Brown
ISBN: 0-441-85914-3 / 978-0-441-85914-6 (USA edition)
Publisher: Ace Books