No Edition Remarks. 390 pages. No dust jacket. Book I - World Studies. Blue pictorial boards with black lettering. Contains black and white photographs throughout. Pages are lightly tanned with moderate foxing to endpapers and text block edges. Pencil inscription to front free endpaper, with a few small nicks along text block edge. Mild cracking to gutters with exposed netting. Binding remains mostly firm. Occasional thumb-marking present throughout. Minor dog-eared corners. Boards have moderate shelf-wear with notable bumping to corners and rubbing to surfaces. Heavy tanning to spine and edges, with visible crushing to spine ends. Boards are subtly bowed. Liquid drops on front and rear board.