Poliomyelitis, report on 1946-47, epidemic.
I
I
MacKENZIE
R R
RR
McKNIGHT
D001699:Biometry; D058872:Epidemics; D011051:Poliomyelitis / Q000453:epidemiology* / Q000706:statistics & numerical data*
POLIOMYELITIS/epidemiology and statistics