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Studies of heart disease mortality : an analysis of the accuracy of deaths recorded as being due to heart disease in Washington, D.C., during 1932, with a discussion of the defects of the present method of tabulating deaths, and suggestions for a new system based upon etiological factors / by O.F. Hedley ; prepared by direction of the surgeon general.
- Hedley, Odwald Fenton, 1903-
Medical statistics, or A comparative view of the mortality in New York, Philadelphia, Baltimore, and Boston, for a series of years : including comparisons of the mortality of whites and blacks in the two former cities : and of whites, free blacks, and slaves in Baltimore / by Nathaniel Niles, Jun. ... and John D. Russ ...
- Niles, Nathaniel, 1791-1869.