Columbia subject headings:
Harvard subject headings:
German language--Dialects.
German language--Psychological aspects.
German language--Social aspects.
Germany--Languages--Variation.
Languages in contact--Germany.
Linguistic minorities--Germany.
Princeton subject headings:
German language--Dialects.
German language--Psychological aspects.
German language--Social aspects.
Germany--Languages--Variation.
Languages in contact--Germany.
Linguistic minorities--Germany.