1934. No Edition Stated. 256 pages. No dust jacket. Green cloth with gilt lettering. Contains transect chart and a folding map in rear pocket. B&W illustrations and photographs throughout. Notable foxing and tanning to endpapers and page edges. Plate at page 120 detached. Some gutter cracking. Pages are rough cut. Moderate wear and bumping to spine, board edges and corners, with splitting to spine ends and corners. Notable sunning to spine. Large faded stains and visible other marks to boards.