1943. 2nd edition 9th impression. 391 pages. No dust jacket. This is an ex-Library book. Blue cloth with gilt titles to spine. Book has been rebound by library, with expected inserts, stamps and inscriptions. Includes various diagrams. Pages have slight foxing, tanning and minor thumbing. Occasional stains and marks. A few pages coming loose. Many dog-eared corners. Boards have some edge wear, with pronounced bumping and fraying to corners, while spine ends are crushed and rubbed. Rather scratched, rubbed, stained and marked overall. Book has a heavy forward lean. Gilt is bright.