1956. Revised Edition. 191 pages. No dust jacket. Blue cloth. Pages are moderately tanned with some foxing throughout. Slight crinkling to paper at gutters, however binding remains firm. Minor rust marks to top edge of title page and forward. Minor water staining to top edge of text block. Text is unaffected. Boards have moderate edge wear with corner bumping. Visible tanning to spine and edges with some crushing to spine ends. Faint water staining overall. Book is slightly bowed and forward leaning.