Cart Shopping Cart My Store Account Orders Downloads Shopping Cart Remove item Thumbnail image Product Price Quantity Subtotal × 2232. Determination of the Manager's Reserve Guideline for the Space Shuttle Xo Center of Gravity $20.00 2232. Determination of the Manager's Reserve Guideline for the Space Shuttle Xo Center of Gravity quantity $20.00 × 2240. Weight Control in the Manufacturing Environment at Erda, Inc. $20.00 2240. Weight Control in the Manufacturing Environment at Erda, Inc. quantity $20.00 × 32. Weight and It's Effect on the Operation and Performance of Commercial Aircraft $20.00 32. Weight and It's Effect on the Operation and Performance of Commercial Aircraft 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