Columbia subject headings:
Harvard subject headings:
Anatolian languages--Grammar, Comparative--Indo-European.
Anatolian languages--Grammar, Comparative.
Hittite language--Grammar, Comparative--Indo-European.
Hittite language--Grammar, Comparative.
Indo-European languages--Grammar, Comparative--Anatolian.
Indo-European languages--Grammar, Comparative--Hittite.
Princeton subject headings:
Hittite language--Grammar, Comparative.
Indo-European languages--Grammar, Comparative.