TY - JOUR DP - http://iris.who.int/ DB - WHO IRIS EP - 468 AU - World Health Organization LA - en LA - fr UR - https://iris.who.int/handle/10665/215630 JF - Weekly Epidemiological Record = Relevé épidémiologique hebdomadaire DA - 1966 PY - 1966 IS - 35 SP - 453 TI - Weekly Epidemiological Record, 1966, vol. 41, 35 [full issue] VL - 41 ER -