AU  - DOUGLASS M
TI  - EArly diagnosis of pregnancy
PT  - JOUR
DP  - 1929
TA  - Journal of the American Medical Association
pages = {443-445},
VI  - 93
IP  - 6
AID  - 10.1001/jama.1929.02710060019005 [doi]
4100  - http://dx.doi.org/10.1001/jama.1929.02710060019005
SO  - Journal of the American Medical Association August 10, 1929 93(6):443