TY - JOUR T1 - Encyclopaedia of Occupational Health and Safety Vol. II/L-Z JF - British Journal of Industrial Medicine JO - Br J Ind Med SP - 75 LP - 75 DO - 10.1136/oem.31.1.75 VL - 31 IS - 1 AU - R. C. Browne Y1 - 1974/01/01 UR - http://oem.bmj.com/content/31/1/75.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -