Columbia subject headings:
German language--Dialects--Africa--Handbooks, manuals, etc.
German language--Dialects--Australia--Handbooks, manuals, etc.
German language--Dialects--Handbooks, manuals, etc.
German language--Dialects--Latin America--Handbooks, manuals, etc.
German language--Dialects--Oceania--Handbooks, manuals, etc.
German language--Dialects--United States--Handbooks, manuals, etc.
Harvard subject headings:
German language--Foreign countries.
Germans--Foreign countries
Handbooks and manuals
Princeton subject headings:
German language--Dialects--Handbooks, manuals, etc.