1. Vital Statistics of the United States 1988, Volume-Mortality, Section 2—Infant Mortality;National Center for Health Statistics,1991
2. Advance report of final mortality statistics, 1991;National Center for Health Statistics;Monthly Vital Statistics Report,1993
3. The relationship of socio-political and health services variables to state-level infant mortality;Bird,1993
4. The relationship between structural and health services variables and state-level infant mortality in the United States;Bird;Am. J. publ. Hlth,1995
5. State-level infant, neonatal, and postneonatal mortality: The contribution of selected structural variables;Bird,1994