1949. Fourth Edition. 456 pages. No dust jacket. Green cloth. Contains black and white photographic plates. Clean pages with noticeable tanning and foxing throughout. Tightly bound with faint thumb-marking throughout. Stickers to front endpaper. Boards have light edgewear with corner crushing and notable marking to boards. Mild tanning to board edges and moderate to spine, which has mild crushing to ends. Mild warping to front board. Mild water stain to spine.