New Observations, Natural, Moral, Civil, Political, and Medical, on City, Town and Country Bills of Mortality. to Which Are Added, Large and Clear Abstracts of the Best Authors Who Have Wrote on That Subject

New Observations, Natural, Moral, Civil, Political, and Medical, on City, Town and Country Bills of Mortality. to Which Are Added, Large and Clear Abstracts of the Best Authors Who Have Wrote on That Subject