1950. Sixth impression. 88 pages. Grey dust jacket over green cloth with gilt. No. 12 in the International Psycho-Analytical Library. Binding remains firm. Pages remain bright and clear with minimal tanning and foxing. Boards have mild edge-wear with slight rubbing to surfaces. Gilt lettering is bright and clear. Mild crushing to spine ends. Unclipped jacket has moderate edge-wear with chips, tears and creasing. Sunning to spine and inner edges of both panels.