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 × 3008. The Systems Engineering Role in Mass Properties $20.00 3008. The Systems Engineering Role in Mass Properties quantity $20.00 × 2446. Kinking of Integrally Stiffened Skins $20.00 2446. Kinking of Integrally Stiffened Skins quantity $20.00 × 1. Weight Economy $20.00 1. Weight Economy quantity $20.00 × 22. Preliminary Design Equations for Aircraft Weight Estimation $20.00 22. Preliminary Design Equations for Aircraft Weight Estimation quantity $20.00 Coupon: Apply coupon Update cart Available coupons (Click to apply). Cart totals Subtotal $100.00 Tax $0.00 Total $100.00 Proceed to checkout