After a weak August report, trade book sales as monitored by the AAP across approximately 1,200 publishers rebounded in September. With $665 million in net shipments for the month, up $45.5 million (or more than 7 percent), the gains all came from adult books, as children’s and YA titles were just below flat. As already established by full-year 2015 unit sales figures from Nielsen Bookscan, adult trade paperbacks showed the greatest strength again in September, up $33 million at $138 million in total. All adult publishing categories registered some gains — including hardcovers, up $8.6 million to $188.6 million — […]