Employment (1) Assaying (1) World health (1) Whites (1) Twentieth century (1) Syndicalism (1) Speeches, addresses, etc (1) Race (1) Public health (1) Working class (1) Industrial arts (1) Immigrants (1) Guilds (1) Gender (Musical instrument) (1) Consumers (1) Concord (1) Chinese (1) Americans (1) Management (1) Analysis (1) Labor unions (1) Occupations (1) Discursos (1) Funcionarios--Sindicatos (1) Gremios (1) Sindicatos (1) Sindicalismo (1) Trabajo (1) Consumidores (1) Analyse (1)