TY  - BOOK
ED  - World Health Organization
TI  - International travel and health : vaccination requirements and  health advice, situation as on 1 January 1989 / World Health  Organization
SN  - 9241580143
U1  - B 16.52 WHO -363   
CY  - Geneva, 1989.
KW  - Vaccination
KW  - Travel - Hygienic aspects
KW  - HEA
N1  - ISBN 92-4-158014-3
ER  -