"Hospitals Early works to 1800." . . . . . "Two essays in political arithmetick concerning the people, housing, hospitals, &c. of London and Paris"@en . . . . . . . . . . . "Deux essays d'arithmetique politique touchant les villes et hospitaux de Londres et Paris" . "Two essays in political arithmetick, concerning the people, housing, hospitals, &c. of London and Paris" . . "Two essays in political arithmetick, concerning the people, housing, hospitals, &c. of London and Paris"@en . . . . . "Statistics" . "Statistics"@en . . . . "Observations upon the cities of London and Rome"@en . . "Pictorial works" . . . . "Early works" . "Early works"@en . . . . . . . "Electronic books" . "Two essays in political arithmetick, concerning the people, housing, hospitals, &c. of London and Paris. By Sir William Petty, Fellow of the Royal Society"@en . "Two essays in political arithmetick, concerning the people, housing, hospitals, &c. of London and Paris. By Sir William Petty, Fellow of the Royal Society" . . "Vital statistics"@en . "Vital statistics" . . "Deux essays d'arithmetique politique, touchant les villes et hospitaux de Londres et Paris. Dedie's au Roy, par le chevalier Petty, de la Société Royale" . . . . . . . "Two essays in political arithmetick"@en . "Two essays in political arithmetick" . . . . . . "Paris" . . "1686" . . "England" . . "London (England)" . . "Paris (France)" . . "Hejaz (Kingdom). Delegation (Paris Peace Conference, 1919-1920)" . .