TY  - GEN
TI  - International travel and health : vaccination requirements and health advice : situation as on 1 January 1998
SN  - 92-4-158023-2-
SN  - 0254-296X
PY  - 1998///
CY  - Geneva : 
PB  - World Health Organization
KW  - Communicable disease control
KW  - Travel
KW  - Vaccination
ER  -