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I.e. history is general history, non-fiction is general non-fiction, etc. History books, for example, include all topics and subgenres that fall under the History genre. Lots are random and could include just one topic/subgenre or could include every subgenre under the selected genre, it all depends on the books chosen for the lot.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.