Witherite (Natural Barium Carbonate) and Its Industrial Uses by Unstated
1940. First Edition. 56 pages. No dust jacket. Blue cloth. Contains black and white plates. Pages are moderately tanned and foxed throughout. Scuffing to front free endpaper. Thumb-marking present. Visible creasing to gutter. Boards have mild edge-wear with slight rubbing to surfaces. Soft crushing to spine ends. Noticeable tanning to spine and edges. Boards are somewhat bowed.