TY - BOOK ED - WHO Study Group on Rheumatic Fever and Rheumatic Heart Disease TI - International travel and health: vaccination requirements and health advice, situation as on 1 January 1994 SN - 9241580194 PY - 1994/// CY - Geneva PB - World Health Organization KW - Vaccination KW - Handbooks KW - Travel KW - World health KW - Communicable Disease Control ER -