. Investigations on epidemic infantile paralysis : report from the State Medical Institute of Sweden to the XV International Congress of Hygiene and Demography, Washington 1912 . TU lounia-rj oj tlir !T> ana a £ l s a -fc. Hap 3 The extension o| the epidemic oL Etaid-Hvetuuicla, otvCase olr poliomue litis © 30:YI ■ (-Eksio) 23: VII •••••••• ASrVflr ===== 31 :X —— 30: XI o o o o o o o 13: XII = = = :« v % - ^WEXlO J o •> , the county olerj. «l»,,,| ft. «.»!,+♦♦..f~ / ijo8—■ o ^2 I 190?- Q -£ / 1910—■ □ il IJII--.

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Keywords: ., bookcentury1900, booksubjectchildren, booksubjectepidemics, booky