Columbia subject headings:
Harvard subject headings:
Business cycles--Congresses.
Business cycles.
Long waves (Economics)
Long waves (Economics)--Congresses.
Saving and investment--Congresses
Saving and investment.
Social structure--Congresses.
Social structure.
Technological innovations--Economic aspects
Technological innovations--Economic aspects--Congresses
Princeton subject headings:
Business cycles--Congresses.
Long waves (Economics)--Congresses.
Saving and investment--Congresses.
Social structure--Congresses.
Technological innovations--Economic aspects--Congresses.