Improvement in Mortality Rates and Expectation of Life in the United States from 1890 to 1920
- 27 July 1928
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 68 (1752), 73-75
- https://doi.org/10.1126/science.68.1752.73