Columbia subject headings:
Industrialization--Poland--Katowice--Congresses.
Katowice (Poland)--Civilization--Congresses.
Katowice (Poland)--History--Congresses.
Harvard subject headings:
Architecture--Poland--Katowice--History--Congresses.
Industries--Poland--Katowice--History--Congresses.
Katowice (Poland)--Social conditions--Congresses.
Princeton subject headings: