The women and their pregnancies : the Collaborative Perinatal Study of the National Institute of Neurological Diseases and Stroke - Niswander, Kenneth R., d. 1924-; Gordon, Myron, d. 1926-; National Institute of Neurological Diseases and Stroke; United States. Department of Health, Education, and Welfare (Washington, D. C. : The Departement, 1972)
"Characteristics and conditions of pregnancy, by institution": (microfiche. 2 sheets 11 x 15 cm.) in pocket
In
Keywords: Collaborative Perinatal Project (U.S.); Pregnancy -- United States -- Statistics; Pregnancy -- Complications -- United States -- Statistics; Childbirth -- United States -- Statistics; United States -- Statistics, Medical