Cart Shopping Cart My Store Account Orders Downloads Shopping Cart “33. Some Problems in the Selection of Optimum Airplane Configurations for Minimum Weight” has been added to your cart. Continue Shopping “25. The Effect of Overload and Unbalance on Long Range Operation” has been added to your cart. Continue Shopping Remove item Thumbnail image Product Price Quantity Subtotal × 20. Wing Weight Estimating Simplified $20.00 20. Wing Weight Estimating Simplified quantity $20.00 × 33. Some Problems in the Selection of Optimum Airplane Configurations for Minimum Weight $20.00 33. Some Problems in the Selection of Optimum Airplane Configurations for Minimum Weight quantity $20.00 × 25. The Effect of Overload and Unbalance on Long Range Operation $20.00 25. The Effect of Overload and Unbalance on Long Range Operation 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