Columbia subject headings:
English language--Grammar, Comparative--German.
English language--Morphology.
German language--Grammar, Comparative--English.
Harvard subject headings:
English language--Grammar, Comparative--German
English language--Morphology
German language--Grammar, Comparative--English.
Princeton subject headings:
English language--Foreign elements--German.
English language--Grammar, Comparative--German.
English language--Morphology.
German language--Grammar, Comparative--English.