Columbia subject headings:
Erzurum İli (Turkey)--Economic conditions.
Erzurum İli (Turkey)--Social conditions.
Harvard subject headings:
Erzurum İli (Turkey)
Erzurum İli (Turkey)--Economic conditions.
Erzurum İli (Turkey)--Social conditions.
Princeton subject headings:
Erzurum İli (Turkey)--Economic conditions.
Physical geography--Turkey--Erzurum İli.