RT Journal Article
SR Electronic
T1 Abstracts
JF British Journal of Industrial Medicine
JO Br J Ind Med
FD BMJ Publishing Group Ltd
SP 291
OP 294
DO 10.1136/oem.10.4.291
VO 10
IS 4
YR 1953
UL http://oem.bmj.com/content/10/4/291.abstract
AB