This is a used book. While it shows some signs of wear, there are no markings. I think it's rare. It's a must-have for anyone involved with wakame. Is this the only specialized book on wakame in the food industry? This is the newest edition. [Overview] The chapter "Current Status and Issues of the Wakame Market" has added a section on "Damage and Recovery of Sanriku Wakame Due to the Great East Japan Earthquake." The book chronicles the damage to Sanriku wakame, the recovery of wakame aquaculture, and the challenges associated with the recovery, documenting events as they unfolded. We recommend this book for a wide range of uses, as a pocket encyclopedia for those seeking to learn general knowledge about food, and as educational material for employee training. Food Seaweed Fisheries Kombu