Title: Aerobiology
Subjects: Air, Airborne infection, Congresses, Microbiology, Air microbiologie, Congrès, Maladie transmissible, Discrimination in employment, African Americans, Employment, African American labor union members, Construction workers, Labor unions, Discrimination dans l'emploi, Noirs, Travail, Syndicats, Adhésion des Noirs américains, Ouvriers de la Construction, Air Microbiology, Air, microbiology