Reinforcement and Behavior by Jack T. Tapp
1969. United Kingdom Edition. 429 pages. Black and white dust jacket over blue cloth. Pages remain bright and clear with minimal tanning and foxing. Pencil inscription to front free endpaper. Some creasing to gutter. Boards have mild edge-wear with slight rubbing to surfaces. Light crushing to spine ends. White marks to boards. Textblock is shaky. Unclipped jacket has moderate edgewear with chips, tears and creasing. Visible tanning to spine. Noticeable rubbing to surfaces.