Observations on the expectations of lives - the increase of mankind, the influence of great towns on population, and particularly the state of London, with respect to healthfulness and number of inhabitants : communicated to the Royal Society, April 27, 1769 : in a letter from Mr. Richard Price ... to Benjamin Franklin, Esq

Förlag	År	Ort	Om boken	ISBN
Printed by W. Bowyer and J. Nichols	1769	England, London	39 sidor.