1965. Fourth Edition. 556 pages. Dust jacket over purple cloth. Contains colour maps. Black and white illustrations throughout. Clean pages with mild tanning and foxing throughout. Tightly bound with faint thumb-marking throughout. Notable water stain to front pastedown and endpapers. Water stain to upper text block edge. Boards have light shelf-wear with corner bumping. Large water stains to front board. Notable warping to front board. Mild crushing to spine ends. Unclipped jacket has light edgewear with tears and creasing. Heavy water staining to spine and front panel. Notable rubbing and marking all over. Notable foxing to surfaces.