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× 12. Weight Control - Aircraft Design Problem 12. Weight Control - Aircraft Design Problem $20.00
$20.00
× 1. Weight Economy 1. Weight Economy $20.00
$20.00
× 25. The Effect of Overload and Unbalance on Long Range Operation 25. The Effect of Overload and Unbalance on Long Range Operation $20.00
$20.00
× 9. Aircraft Balancing and Center of Gravity Control 9. Aircraft Balancing and Center of Gravity Control $20.00
$20.00

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Subtotal $80.00
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Total $80.00
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