Methods used in establishing permissible levels in occupational exposure to harmful agents report of a WHO expert committee /
World Health Organization.Expert Committee on Methods Used in Establishing Permissible Levels in Occupational Exposure to Harmful Agents.
International Labour Organisation.
Geneva W.H.O. [London] [H.M.S.O.]
1977
ISBN 92-4-120601-2
Hazardous substances.
Industrial toxicology