RT Journal Article
SR Electronic
T1 Chronic respiratory diseases.
JF Journal of Epidemiology and Community Health
JO J Epidemiol Community Health
FD BMJ Publishing Group Ltd
SP 4
OP 5
DO 10.1136/jech.47.1.4
VO 47
IS 1
A1 W W Holland
YR 1993
UL http://jech.bmj.com/content/47/1/4.abstract
AB