TY - JOUR DP - http://iris.who.int/ DB - WHO IRIS EP - 443 AU - World Health Organization LA - en LA - fr UR - https://iris.who.int/handle/10665/214445 JF - Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire DA - 1964 PY - 1964 IS - 36 SP - 443 TI - INTERNATIONAL CERTIFICATE OF VACCINATION OR REVACCINATION_x000D_AGAINST SMALLPOX = CERTIFICAT INTERNATIONAL DE VACCINATION OU DE REVACCINATION_x000D_CONTRE LA VARIOLE VL - 39 ER -