TY  - GEN
ED  - The Collaborative Perinatal Study of the National Institute of Neurological Diseases and stroke.
TI  - The women and their pregnancies
PY  - 1972///
CY  - Maryland : 
PB  - U.S. Deparment of Health, education, and Welfare
KW  - Pregnancy
KW  - Pregnancy complications
ER  -