Columbia subject headings:
Harvard subject headings:
Families--Germany--History--19th century.
Families--Germany--History--20th century.
Germany--Social conditions--19th century
Germany--Social conditions--20th century
Interpersonal relations--Germany--History--19th century.
Interpersonal relations--Germany--History--20th century.
Man-woman relationships--Germany--History--19th century.
Man-woman relationships--Germany--History--20th century.
Masculinity--Germany--History--19th century.
Masculinity--Germany--History--20th century.
Sex role--Germany--History--19th century.
Sex role--Germany--History--20th century.
Princeton subject headings:
Families--Germany--History--19th century.
Families--Germany--History--20th century.
Germany--Social conditions--19th century.
Germany--Social conditions--20th century.
Interpersonal relations--Germany--History--19th century.
Interpersonal relations--Germany--History--20th century.
Man-woman relationships--Germany--History--19th century.
Man-woman relationships--Germany--History--20th century.
Masculinity--Germany--History--19th century.
Masculinity--Germany--History--20th century.
Sex role--Germany--History--19th century.
Sex role--Germany--History--20th century.