1967. Seventh Edition. 115 pages. This is an ex-Library book. Illustrated dust jacket over brown cloth with black and white illustrations throughout. Expected library inserts, stamps and inscriptions. Minor tanning to pages with endpapers stick to pastedowns. slight dog-eared pages throughout and moderate tanning to text block edges. Boards have visible bumping to corners and crushing to spine ends as well. Unclipped jacket with minor edge wear and visible tanning. Creasing to spine ends with plastic wrapper over jacket.