RT Journal Article SR Electronic T1 Environmental and Industrial Health Hazards JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 80 OP 80 DO 10.1136/oem.31.1.80-a VO 31 IS 1 A1 W. R. Lee YR 1974 UL http://oem.bmj.com/content/31/1/80.2.abstract AB