RT Journal Article
SR Electronic
T1 CORRECTION
JF British Journal of Industrial Medicine
JO Br J Ind Med
FD BMJ Publishing Group Ltd
SP 303
OP 303
DO 10.1136/oem.30.3.303
VO 30
IS 3
YR 1973
UL http://oem.bmj.com/content/30/3/303.abstract
AB