1965. Third Edition. 47 pages. No dust jacket. This is an ex-Library book. Laminated paper covered boards. Book has been rebound by library, with expected inserts, stamps and inscriptions. Clean pages with light tanning throughout. Tightly bound with faint thumb-marking throughout. Notable scuffing to front pastedown and endpaper. Boards have mild edgewear with corner crushing and notable marking to boards. Notable tanning to board edges and spine, which has mild crushing and tearing to ends. Boards are mildly warped.