1968. Fourth Edition. 367 pages. Blue & white dust jacket with purple lettering over red cloth. Pen & pencil annotations to catalogue pages at rear. Minimal foxing and tanning to endpapers and page edges. Some gutter cracking. Mild wear and bumping to spine, board edges and corners, with scuffing and marking to boards. Unclipped dust jacket. Mild wear, tear and loss to edges and corners. Notable tanning to spine, with staining and soiling to DJ.