Secret sentries in space, By Klass, Philip J Books / Hardcover Transportation › Spaceflight ISBN: 0394469720 / Publisher: Random House, January 1971 Price $30.83 Free Shipping Send to a friend Collectible - Good First Edition With Dust Jacket First edition copy. Collectible - Good. Good dust jacket. Dust jacket price clipped. (Military Astronautics, Satellites, United States, Soviet Union) $30.83 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.