Columbia subject headings:
Bucks County (Pa.)--Economic conditions.
Bucks County (Pa.)--Population.
Bucks County (Pa.)--Social conditions.
Quakers--Pennsylvania--Bucks County--Economic conditions.
Quakers--Pennsylvania--Bucks County--Social conditions.
Harvard subject headings:
Bucks County (Pa.)--Economic conditions.
Bucks County (Pa.)--Population.
Bucks County (Pa.)--Social conditions.
Quakers--Pennsylvania--Bucks County--Economic conditions.
Quakers--Pennsylvania--Bucks County--Social conditions.
Princeton subject headings:
Bucks County (Pa.)--Economic conditions.
Bucks County (Pa.)--Population.
Bucks County (Pa.)--Social conditions.
Quakers--Pennsylvania--Bucks County--Economic conditions.
Quakers--Pennsylvania--Bucks County--Social conditions.