Need for immunization against cholera alone
Need for immunization against diphtheria alone
Need for immunization against influenza
Need for immunization against leishmaniasis
Need for immunization against measles alone
Need for immunization against mumps alone
Need for immunization against pertussis alone
Need for immunization against plague
Need for immunization against poliomyelitis
Need for immunization against rabies
Need for immunization against tetanus alone
Need for immunization against tularaemia
Need for immunization against viral hepatitis
Need for immunization against yellow fever
Need for immunization against tuberculosis [BCG]
air need for combustion
model that crops need for water to irrigate
need for a frame of orientation