TY  - BOOK
ED  - World Health Organization
TI  - Conduct disease surveillance: training for mid-level managers /  World Health Organization/Expanded Programme on Immunization
U1  - R 16.522 WHO -3612   
CY  - [s.l.], [198-?].
KW  - Expanded programme on immunization
KW  - Vaccination
KW  - HEA
ER  -