Cart Shopping Cart My Store Account Orders Downloads Shopping Cart Remove item Thumbnail image Product Price Quantity Subtotal × 23. The Value of a Pound $20.00 23. The Value of a Pound quantity $20.00 × 35. A Graphical Method of Preparing Tabular Schedules for Balance Control in Loading Passenger Transport Aircraft $20.00 35. A Graphical Method of Preparing Tabular Schedules for Balance Control in Loading Passenger Transport Aircraft quantity $20.00 × 22. Preliminary Design Equations for Aircraft Weight Estimation $20.00 22. Preliminary Design Equations for Aircraft Weight Estimation quantity $20.00 × 26. Weight Control Organization for Manufacturers $20.00 26. Weight Control Organization for Manufacturers quantity $20.00 Coupon: Apply coupon Update cart Available coupons (Click to apply). Cart totals Subtotal $80.00 Tax $0.00 Total $80.00 Proceed to checkout