RT Journal Article
SR Electronic
T1 Period between Ovulation and Birth
JF British Journal of Preventive & Social Medicine
JO Br J Prev Soc Med
FD BMJ Publishing Group Ltd
SP 160
OP 162
DO 10.1136/jech.7.3.160
VO 7
IS 3
A1 J. R. Gibson
A1 T. Dougray
YR 1953
UL http://jech.bmj.com/content/7/3/160.abstract
AB