004060000a22001570004500003000900000005001700009020001800026100002700044245003500071264004900106300000900155490003600164041000800200650001400208650002600222PH-MaWHO20241108112207.0  a92-4-140035-8  aTurner T B, David H.H.  aBiology of the treponematoses.  aGeneva : bWorld Health Organization,c1957.  a35p.  a(WHO monograph series; no. 35).  aeng  aTreponema  aTreponemal infections