1957. Seventh Edition. 145 pages. Blue and beige dust jacket over white paper covers. In Spanish. Pages and binding are presentable with no major defects. Minor issues present such as mild cracking, inscriptions and moderate tanning. Paper cover has mild edge wear with light rubbing and creasing. Some light marking and sunning. Reading creases to spine. Unclipped jacket has light edge wear with minor tears and chipping. Mild rubbing and marking. Tanning to spine and edges.