1946. No Edition Stated. 187 pages. No dust jacket. This is an ex-Library book. Brown cloth with gilt lettering. Many fold out diagrams to rear. B&W illustrations throughout. Minimal foxing and tanning to endpapers and page edges. Some minor tearing to fold outs. Ex-library with usual stamps, inserts and markings. Mild wear and bumping to spine, board edges and corners, with scuffing, staining and marking to boards. Moderate sunning to spine. Dewy code to spine.