Barnes & Noble, Inc. is engaged in the retail sale of trade books(generally hardcover and paperback consumer titles, excluding educationaltextbooks and specialized religious titles), mass market paperbacks (such as mystery, romance, science fiction and other popular fiction), children''s books, off-price bargain books and magazines. These collectively account for substantially all of the company''s bookstore sales. Bestsellers represent only a small portion of the Barnes & Noble store sales.