Polio -- the final ascent.
D004194:Disease; D007390:International Agencies; D009938:Organizations; D011051:Poliomyelitis; D016730:Program Development; D014480:United Nations; D014777:Virus Diseases; D014944:World Health Organization
Diseases; International Agencies; Organizations; Poliomyelitis--prevention and control; Progress Report; Un; Viral Diseases; Who; World