Columbia subject headings:
German language--Orthography and spelling.
Graphemics.
Language and languages--Orthography and spelling.
Harvard subject headings:
German language--Orthography and spelling.
Graphemics.
Language and languages--Orthography and spelling
Princeton subject headings:
Graphemics--Congresses.
Language and languages--Orthography and spelling--Congresses.
Psycholinguistics--Germany (West)--Congresses.