NEW YORK--(BUSINESS WIRE)--Barnes & Noble, Inc. (NYSE:BKS), the nation’s largest retail bookseller and the leading retailer of content, digital media and educational products, today announced that it has expanded its selection of Graphic Novels and Manga to double the size at all stores nationwide. The company said the expansion is due to strong customer demand and the growing popularity of these genres. The expanded section features eye-catching signage on bookshelves that directs customer