The Invisible Force By Parker, Ed Books / Paperback Books › History › Military › General ISBN: 1933449055 / Publisher: Nightengale Press, October 2005 Price Starting at $17.99 Free Shipping Send to a friend Add to Wishlist Below is a list of products arranged by condition. Select the quantity of the product you desire and click the "Add" button. Collectible - Like New Signed High Quality! Signed Copy Collectible - Like New. Signed/Inscribed by author on title page. (military espionage, air warfare, foreign relations) $17.99 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store. Reviews Goodreads reviews for The Invisible Force