Columbia subject headings:
Harvard subject headings:
German language--Etymology.
German language--Foreign elements--21st century.
German language--Foreign influences--21st century.
German language--New words--21st century.
German language--Spoken German.
German language--Variation.
Germany--Emigration and immigration.
Germany--Languages.
Languages in contact--Germany.
Multilingualism--Germany.
Princeton subject headings:
German language--Etymology.
German language--Foreign elements--21st century.
German language--Foreign influences--21st century.
German language--New words--21st century.