1. On the inhalation of sulfuric ether in the practice of midwifery;Simpson;Edinburgh Monthly Journal of Medical Science,1847
2. The letheon administered in a case of labor;Keep;Boston Med Surg J,1847
3. The Works of James Young Simpson;Simpson,1871
4. Obstetric anesthesia: The first ten years;Caton;Anesthesiology,1970
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