Auctions,%20Advertisements,%20and%20Agony:%20The%20Buying%20and%20Selling%20of%20Slaves
https://www.powershow.com/view/9f1e2-YWEyM/Auctions_20Advertisements_20and_20Agony_20The_20Buying_20and_20Selling_20of_20Slaves_powerpoint_ppt_presentation
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