Columbia subject headings:
Indo-European languages--Phonology, Historical--Congresses.
Reconstruction (Linguistics)--Congresses.
Typology (Linguistics)--Congresses.
Harvard subject headings:
Indo-European languages--Phonology, Historical--Congresses.
Reconstruction (Linguistics)--Congresses.
Typology (Linguistics)--Congresses.
Princeton subject headings:
Indo-European languages--Phonology, Historical--Congresses.
Reconstruction (Linguistics)--Congresses.
Typology (Linguistics)--Congresses.