RT Journal Article SR Electronic T1 Health risks from hazardous substances at work. Assessment, evaluation and control JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 504 OP 504 DO 10.1136/oem.51.7.504 VO 51 IS 7 A1 J M Harrington YR 1994 UL http://oem.bmj.com/content/51/7/504.1.abstract AB