Original issue, US Army Training Circular, 131 pages plus 1 fold out page, size is 8 1/4" x 10 3/4", stapled, three hole punched, dated 9 September 1988.  This is not a commercial copy or print but an original issue government print issued in 1988.  This publication is titled - TC 31-19, Special Forces, Military Free-Fall Parachuting.  Publication is designed to establish doctrine, responsibilites, and procedures employed by US Army Special Forces in planning, coordinating, and executing military free-fall infiltrations.  Very well illustrated using clear and detailed line drawings.