TY  - GEN
ED  - World Health Organization
TI  - Vaccination certificate requirements and health advice for international travel : situation as on 1 January 1987
SN  - 92-4-158012-7
PY  - 1987///
CY  - Geneva : 
PB  - World Health Organization
KW  - Communicable disease control
KW  - Travel
KW  - Vaccination
ER  -