Columbia subject headings:
Harvard subject headings:
Albania--Relations--Greece--Congresses.
Anthropology--Balkan Peninsula--Congresses.
Balkan Peninsula--Ethnic relations--Congresses.
Ethnology--Balkan Peninsula--Congresses.
Greece--Relations--Albania--Congresses.
Princeton subject headings:
Social psychology--Albania--Congresses.
Social psychology--Greece--Congresses.