American Iron and Steel Institute, New York. Committee on Industrial Health. (1953). Study of industrial health practices for the iron and steel industry. American Iron and Steel Institute.
Dyfyniad Arddull ChicagoAmerican Iron and Steel Institute, New York. Committee on Industrial Health. Study of Industrial Health Practices for the Iron and Steel Industry. New York: American Iron and Steel Institute, 1953.
Dyfyniad MLAAmerican Iron and Steel Institute, New York. Committee on Industrial Health. Study of Industrial Health Practices for the Iron and Steel Industry. American Iron and Steel Institute, 1953.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.