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. With an appendix on the weather and meteors

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. With an appendix on the weather and meteors (Online)