RT Journal Article
SR Electronic
T1 American Medical Services
JF British Journal of Social Medicine
JO Br J Soc Med
FD BMJ Publishing Group Ltd
SP 77
OP 105
DO 10.1136/jech.2.3.77
VO 2
IS 3
A1 McKeown, Thomas
YR 1948
UL http://jech.bmj.com/content/2/3/77.abstract
AB