TY - JOUR T1 - Environmental and Industrial Health Hazards JF - British Journal of Industrial Medicine JO - Br J Ind Med SP - 80 LP - 80 DO - 10.1136/oem.31.1.80-a VL - 31 IS - 1 AU - W. R. Lee Y1 - 1974/01/01 UR - http://oem.bmj.com/content/31/1/80.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -