Columbia subject headings:
Harvard subject headings:
German language--Germany--Readers--History.
German language--Germany--Readers--Social conditions.
German language--Germany--Readers.
German language--Readers--Germany.
German language--Textbooks for foreign speakers--English.
Germany--History--1871-1918--Problems, exercises, etc.
Germany--History--1871-1918.
Germany--Social life and customs--Problems, exercises, etc.
Germany--Social life and customs.
Princeton subject headings:
German language--Readers--Germany--History.
German language--Readers--Germany--Social conditions.
German language--Textbooks for foreign speakers--English.
Germany--History--1871-1918.
Germany--Social life and customs.