ADV Manga has signed with Diamond Book Distribution as its 'premier' distributor to the book trade.  ADV's flagship brand, ADV Films, is the number one producer/distributor of Japanese animation in North America, and the firm hopes to continue its success with the new manga line (see 'ADV Announces Manga Launch').  ADV President and CEO John Ledford says ADV is 'pleased to be working with Diamond Book Distributors to bring these titles to readers everywhere.'   Diamond's sales team will be working with bookstores, book wholesalers, mass merchandisers, and libraries to place ADV Manga titles across the U.S.