[Zigfrid Isidorovich Izraél'son (on his 80th birthday)].
D004957:Estonia; D049672:History, 19th Century; D049673:History, 20th Century; D009787:Occupational Medicine / Q000266:history; D014586:USSR
Zigfrid Isidorovich Izraél'son (k 80-letiiu so dnia rozhdiniia.