Columbia subject headings:
Harvard subject headings:
Indo-European languages--Case grammar.
Indo-European languages--Morphology.
Indo-European languages--Noun.
Indo-European languages--Phonology.
Indo-European languages--Study and teaching (Secondary)
Princeton subject headings:
Indo-European languages--Case grammar.
Indo-European languages--Morphology.
Indo-European languages--Noun.
Indo-European languages--Phonology.
Indo-European languages--Study and teaching (Secondary)