Sumner, William Graham Folkways : a study of the sociological importance of usages, manners, customs mores, and morals - New York : The New American Library, 1960 - xv, 605 p - A mentor book . Source: donación Subjects--Topical Terms: SOCIOLOGIACOSTUMBRESSISTEMA DE VALORESPOBLACION INDIGENA Dewey Class. No.: BIB-ZUI/05.01.01/0127