1952. 18th Edition, Revised. 103 pages. No dust jacket. Green and brown paper covered boards. Black and white photographic plates throughout. Binding remains firm. Plate to page 22 detached but still present. Pages and plates have light tanning and foxing throughout. Boards have moderate shelf-wear with bumping to corners and rubbing to surfaces. Light tanning to spine and edges with crushing to spine ends. Water staining to rear board.