RT Journal Article
SR Electronic
T1 Author's reply
JF British Journal of Industrial Medicine
JO Br J Ind Med
FD BMJ Publishing Group Ltd
SP 646
OP 647
DO 10.1136/oem.47.9.646-a
VO 47
IS 9
YR 1990
UL http://oem.bmj.com/content/47/9/646.2.abstract
AB