1. Infant Death: An Analysis by Maternal Risk and Health Care;Kessner,1973
2. The Collaborative Perinatal Study of The National Institute of Neurological Diseases and Stroke: The Women and Their Pregnancies,1972
3. Risks in the Practice of Modern Obstetrics,1972
4. Comparative Analyses of Births by Birth Order, Ga;Moore,1974
5. Trends in Low-Birth-Weight Ratios. United States and Each State, 1950-69;Chase,1973