Improvement in Mortality Rates and Expectation of Life in the United States from 1890 to 1920

Autor:	Glover, James W.
Zdroj:	Science, 1928 Jul . 68(1752), 73-75.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/1653110 Zobrazit plný text záznamu