Columbia subject headings:
Economic development--Social aspects--Congresses.
Industrialization--Social aspects--Congresses.
Social change--Congresses.
Harvard subject headings:
Economic development--Social aspects--Congresses
Industrialization--Social aspects--Congresses.
Social change--Congresses
Princeton subject headings:
Economic development--Social aspects--Congresses.
Industrialization--Social aspects--Congresses.
Social change--Congresses.