RT Journal Article
SR Electronic
T1 Sources of Seasonal Variation in Recorded Length of Gestation
JF British Journal of Preventive & Social Medicine
JO Br J Prev Soc Med
FD BMJ Publishing Group Ltd
SP 128
OP 132
DO 10.1136/jech.17.3.128
VO 17
IS 3
A1 Record, R. G.
A1 Leck, Ian
YR 1963
UL http://jech.bmj.com/content/17/3/128.abstract
AB