1951. Fourth Edition. 127 pages. Pictorial paper cover. Spanish and English text. Contains black and white photographic plates. Pages and plates are lightly tanned and foxed throughout. Slight cracking to gutters of a few pages. Light thumb-marking present. Binding remains firm. Paper cover has moderate edge wear with scuffing to edges and creasing. Scuffed splits to spine ends. Moderate tanning to spine and edges. Mild rubbing to surfaces with curling to corners. Water staining to spine and front board.