Columbia subject headings:
Harvard subject headings:
Computer networks--Poland--Łódź.
Transportation--Poland--Łódź.
Łódź (Poland)--Economic conditions.
Łódź Metropolitan Area (Poland)--Economic conditions.
Łódź Metropolitan Area (Poland)--Social conditions.
Princeton subject headings:
Łódź Metropolitan Area (Poland)--Economic conditions.
Łódź Metropolitan Area (Poland)--Social conditions.