United States. President's Research Committee on Social Trends. Recent social trends in the United States : report of the President's research committee on social trends / with a foreword by Herbert Hoover.

United States. President's Research Committee on Social Trends.

Recent social trends in the United States : report of the President's research committee on social trends / with a foreword by Herbert Hoover.

Social problems.

United States -- Social conditions.

United States -- Economic conditions -- 1918-

Mitchell, Wesley Clair, 1874-1948.

Social trends in the United States, Recent.