TY  - GEN
ED  - World Health Organization.
TI  - International travel and health: situation as on 1 January 2012
SN  - 9789241580472
SN  - 0254-296X
PY  - 2012///
CY  - Geneva : 
PB  - World Health Organization
KW  - Communicable disease control
KW  - Travel
KW  - Vaccination
KW  - Standards
KW  - Risk factors
ER  -