Historical notes on disinfected mail.
D000985:Antisepsis; D001207:Asepsis; D003140:Communicable Disease Control; D003141:Communicable Diseases / Q000517:prevention & control*; D004202:Disinfectants; D006801:Humans; D011177:Postal Service
D004202:Disinfectants
ANTISEPSIS AND ASEPSIS; COMMUNICABLE DISEASES/prevention and control