Columbia subject headings:
Chechen language--Grammar, Comparative--Ingush.
Chechen language--Phonology, Historical.
Ingush language--Grammar, Comparative--Chechen.
Ingush language--Phonology, Historical.
Harvard subject headings:
Chechen language--Grammar, Comparative--Ingush.
Chechen language--Phonology, Historical.
Ingush language--Grammar, Comparative--Chechen.
Ingush language--Phonology, Historical.
Princeton subject headings:
Chechen language--Grammar, Comparative--Ingush.
Chechen language--Phonology, Historical.
Ingush language--Grammar, Comparative--Chechen.
Ingush language--Phonology, Historical.