New one volume edition of President Hoover's Report of the Research Committee on Social Trends, published originally in two volumes in January 1933. It went through six printings in a year in its original form. In the new form, it should be invaluable as a reference book on all such questions as population, natural wealth invention and discovery, agencies of communication, changing social attitudes, shifting occupational patterns, racial and ethnic groups, religious organizations, health, governmental functions, public welfare activities, and on and on. Each report is based on careful study of the specific subject by a committee of experts. Sell to public libraries, to schools and colleges, to laymen interested in social and economic problems, and building a reference library.