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