1965. Reprinted. 338 pages. No dust jacket. This is an ex-Library book. Blue 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. Pen inscription to front pastedown. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Gilt lettering is bright and clear. Visible wear marks to boards.