1950. 6th Edition Revised. 102 pages. No dust jacket. This is an ex-Library book. Yellow cloth with gilt lettering. Ex-Library copy, with expected inserts, stamps and inscriptions. Pages remain bright and clear with minimal tanning and foxing. Noticeable cracking to front hinge, with exposed netting. Binding is weakened, however text block remains secure. Title page heavily scratched. Some liquid staining to pages. Boards have noticeable edge wear with corner bumping and rubbing to surfaces. Gilt lettering is dulled.