1961. First Edition. 878 pages. No dust jacket. This is an ex-Library book. Blue cloth. Black & white diagrams. Book is ex-library with expected library inserts, stamps and inscriptions. Pages remain bright and clear with minimal tanning and foxing. Binding is weak. Some pages are dog-earred. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Spine has crushing to both ends causing fraying to cloth. Book has forward lean. White staining present.