From comets to cocaine-- : answers to questions : eighteen discussions with workers at the Goetheanum in Dornach between 19 October 1922 and 10 February 1923 /
Steiner, Rudolf,1861-1925.
Steiner, Rudolf,1861-1925.Health and illness.
London : Rudolf Steiner Press,
2000.
Originally published as: Health and illness. New York : Anthroposophic Press, 1981-1983.