Columbia subject headings:
Marketing--Social aspects--United States--Congresses.
Marketing--United States--Congresses.
Harvard subject headings:
Grether, E. T. (Ewald Theophilus), 1899-1994
Marketing--Social aspects--United States--Congresses.
Marketing--United States--Congresses.
Princeton subject headings:
Marketing--Social aspects--United States--Congresses.
Marketing--United States--Congresses.