Perspective

Askrog V Harvald B , (1970) Nordisk Medicin 83, 498

Bruce D L , (1973) Anesthesiology 38, 473

Bruce D L Eide K A Linde H W Eckenhoff J E , (1968) Anesthesiology 29, 565

Cohen E N Bellville J W Brown B W , (1971) Anesthesiology 35, 343

Committee of the Royal College of Physicians of London (1970) Report on Smoking and Atmospheric Pollution. Pitman, London

Corbett T H Cornell R G Endres J L Millard R I , (1973) Anesthesiology 39, 299

Corbett T H Cornell R G Lieding K Endres J L , (1973) Anesthesiology 38, 260

Fink B R , ed (1967) Toxicity of Anæsthetics. Williams & Wilkins, Baltimore

Geddes I C , (1974) Proceedings of the Royal Society of Medicine 67, 990

Hallen B Ehmer-Samuel H Thomason M , (1970) Acta anæsthesiologica scandinavica 14, 17

Kain M L Nunn J F , (1967) Proceedings of the Royal Society of Medicine 60, 749

Knill-Jones R P Rodrigues L V Moir D D Spence A A , (1972) Lancet i, 1326

Lane J R , (1974) Proceedings of the Royal Society of Medicine 67, 992

Linde H W Bruce D L , (1969) Anesthesiology 30, 363

Mathews J H Marte E Halberg F , (1964) Canadian Anæsthetists' Society Journal 11, 280

Moudgil G C , (1973) British Journal of Anæsthesia 45, 1236

Nikki P Pfäffli P Ahlman R Ralli R , (1972) Annals of Clinical Research 4, 266

Nikki P Pfäffli P Ahlman R , (1972) Lancet ii, 490

Spence A A Knill-Jones R P Newman B J , (1974) Proceedings of the Royal Society of Medicine 67, 989

Strunin L Strunin J M Mallios C C , (1973) British Medical Journal iv, 459

Vaisman A I , (1967) Éksperimental'naya Khirurgiya 12, 44

Whitcher C E Cohen E N Trudell J R , (1971) Anesthesiology 35, 348

WHO (1972) Technical Report Series No. 506

Wilkinson R T , (1974) Proceedings of the Royal Society of Medicine 67, 994