Cart Shopping Cart My Store Account Orders Downloads Shopping Cart Remove item Thumbnail image Product Price Quantity Subtotal × 3646. Improvements and Guidance to the Weight Classification Using Expanded Ship Work Breakdown Structure (ESWBS) $20.00 3646. Improvements and Guidance to the Weight Classification Using Expanded Ship Work Breakdown Structure (ESWBS) quantity $20.00 × 3635. Mass Properties - Flow of Information $20.00 3635. Mass Properties - Flow of Information quantity $20.00 Coupon: Apply coupon Update cart Available coupons (Click to apply). Cart totals Subtotal $40.00 Tax $0.00 Total $40.00 Proceed to checkout