International travel and health :
International travel and health : situation as on 1 January 2012 with 2015 and 2016 updates
- Geneva : World Health Organization, 2016.
chi.
WHODOC
9789241580472 (English version, 2012) 9787502643416 (Chinese)
Communicable disease control.
Travel.
Vaccination--standards.
Risk factors.
WA 110 2016IN
chi.
WHODOC
9789241580472 (English version, 2012) 9787502643416 (Chinese)
Communicable disease control.
Travel.
Vaccination--standards.
Risk factors.
WA 110 2016IN