1963. Fourteenth Printing. 499 pages. No dust jacket. This is an ex-Library book. Brown cloth boards with gilt lettering. Contains black and white diagrams. Ex-Library copy, with expected inserts, stamps and inscriptions. Clean pages and diagrams with light tanning and mild foxing throughout. More pronounced to free endpapers and pastedowns. Pencil and pen markings to front free endpaper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Gilt lettering is darkened. Moderate sunning to spine and edges with crushing to spine ends. Visible wear marks to boards.