1953. Fourth edition. 1482 pages. No dust jacket. This is an ex-Library book. Blue cloth covered boards with gilt. Black and white diagrams throughout. Ex library copy with associated labels, inserts, stamps and annotations. Pages remain bright and clean with minimal tanning and foxing. Binding slightly loose. Some page corners folded and creased at front. Page 25 with a tear. Boards have light shelf wear with minor corner bumping and crushing to spine ends. Gilt lettering to spine is slightly dulled. Some mild marks and staining to surfaces.