title: A history of nitrous oxide and oxygen anaesthesia. IVB. Further light on Hickman and his times.
mesh_terms: D000768:Anesthesia, General / Q000266:history*; D049672:History, 19th Century; D009609:Nitrous Oxide / Q000266:history*; D010100:Oxygen
chemical_list: D009609:Nitrous Oxide; D010100:Oxygen