National policy on immunizations.
Datta
T
T
D015721:Diphtheria-Tetanus-Pertussis Vaccine / Q000008:administration & dosage; D006291:Health Policy; D006801:Humans; D007114:Immunization; D007194:India; D011055:Poliovirus Vaccine, Oral / Q000008:administration & dosage
D015721:Diphtheria-Tetanus-Pertussis Vaccine; D011055:Poliovirus Vaccine, Oral