1959. First Edition. 176 pages. No dust jacket. Blue cloth with gilt lettering. Ex-libris of J. H. P. Sankey, author of A guide to Field Biology. Clean pages with mild tanning and foxing throughout. Tightly bound with faint thumb-marking throughout. Pencil inscription to front endpaper. Mild water staining to pages throughout. Boards have light shelf-wear with corner bumping. Heavy sunning to spine, which has mild crushing and wear to ends. Books has a backward lean. Boards are mildly warped.