1. Armstrong H. G. (1952a) Principles and Practice of Aviation Medicine, 3rd ed., London, p. 226; and (b) p. 245.
2. Clement F. W. (1951a) Nitrous Oxide-Oxygen Anesthesia, 3rd ed., London, p. 288; (b) p. 134; (c) p. 354; (d) p. 335; (e) p. 277; (f) p. 181.
3. Courville C. B. (1939) Untoward Effects of Nitrous Oxide Anesthesia, Mountain View, California, p. 87.
4. CYCLOPROPANE ANESTHESIA