Columbia subject headings:
Harvard subject headings:
German language--Problems, exercises, etc.
German language--Study and teaching--Foreign speakers.
German language--Textbooks for foreign speakers.
Language and languages--Vocational guidance
Language arts--Correlation with content subjects
Princeton subject headings:
German language--Acquisition--Handbooks, manuals, etc.
German language--Study and teaching--Foreign speakers--Handbooks, manuals, etc.
German language--Technical German--Handbooks, manuals, etc.
Multicultural education--Germany--Handbooks, manuals, etc.