Peter Haugen
International Labour Office
United States. Bureau of Labor Statistics.
Richard L. Rashke
Thomas Estabrook
Spain.
Unknown Author
Craig Dean Patton
Trevor A. Kletz
India. Labour Investigation Committee.
Economic Development Committee for the Chemical Industry.
India (Republic). Study Group for Heavy Chemicals.
Fleming Eccles
India. Labour Bureau
Friedrich Fürstenberg
Japan. Tsūshō Kagakukyoku. Kagaku Chōsaka