TY  - BOOK
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
N1  - Electronic versions available for sale only; Issued annually; Library has earlier editions in its archives; 2004 ed. published only electronically
ER  -