No Edition Remarks. 10 pages. This is an ex-Library book. Blue paperback. Expected library inserts, stamps and inscriptions. BIOS Final Report No. 1195, Item Nos. 21 and 31. Pages remain bright and clear with minimal tanning and foxing. Binding remains firm. Paper covers have mild edge-wear with slight rubbing to surfaces. Light curling to corners. Noticeable tanning to spine and edges. Visible rusty staple binding.