1933. 18 Edition. 106 pages. Blue paper covered boards with lettering. Contains black and white diagrams. Textblock is in French. Clean pages and diagrams with noticeable tanning and foxing throughout. More pronounced to free endpapers and pastedowns. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Lettering is bright and clear. Moderate sunning to spine and edges with crushing to spine ends. Visible wear marks to boards.