Columbia subject headings:
Harvard subject headings:
Grammar, Comparative and general--Subjunctive.
Indo-European languages--Grammar, Comparative--Vedic.
Indo-European languages--Morphology.
Indo-European languages--Verb.
Vedic language--Grammar, Comparative--Indo-European.
Vedic language--Verb.
Princeton subject headings:
Grammar, Comparative and general--Subjunctive.
Grammar, Comparative and general--Syntax.
Indo-European languages--Grammar, Comparative.
Indo-European languages--Verb.