Cart Shopping Cart My Store Account Orders Downloads Shopping Cart Remove item Thumbnail image Product Price Quantity Subtotal × 1419. Benefits Analysis Evaluation Procedure $20.00 1419. Benefits Analysis Evaluation Procedure quantity $20.00 × 1442. A Towing Concept for Orbital Transfer of Large Space Structures $20.00 1442. A Towing Concept for Orbital Transfer of Large Space Structures quantity $20.00 × 1416. Price-Weight Relatonships of General Aviation, Helicopters, Transport Aircraft and Engines $20.00 1416. Price-Weight Relatonships of General Aviation, Helicopters, Transport Aircraft and Engines quantity $20.00 Coupon: Apply coupon Update cart Available coupons (Click to apply). Cart totals Subtotal $60.00 Tax $0.00 Total $60.00 Proceed to checkout