Columbia subject headings:
Families--Economic aspects--England--History--19th century--Case studies.
Families--Economic aspects--United States--History--19th century--Case studies.
Family demography--Mathematical models.
Family size--England--History--19th century--Case studies.
Family size--United States--History--19th century--Case studies.
Harvard subject headings:
Extended families--England--History--19th century--Case studies.
Extended families--United States--History--19th century--Case studies.
Families--Economic aspects--England--History--19th century--Case studies.
Families--Economic aspects--United States--History--19th century--Case studies.
Family demography--Mathematical models.
Family size--England--History--19th century--Case studies.
Family size--United States--History--19th century--Case studies.
Princeton subject headings:
Families--Economic aspects--England--History--19th century--Case studies.
Families--Economic aspects--United States--History--19th century--Case studies.
Family demography--Mathematical models.
Family size--England--History--19th century--Case studies.
Family size--United States--History--19th century--Case studies.