[Some historical aspects of sanitary-epidemiological service in Latvia].
D003140:Communicable Disease Control / Q000266:history*; D004165:Diphtheria / Q000517:prevention & control*; D049672:History, 19th Century; D049673:History, 20th Century; D007844:Latvia; D011051:Poliomyelitis / Q000517:prevention & control*; D011634:Public Health / Q000266:history; D012499:Sanitation / Q000266:history
Iz istorii stanovleniia sanitarno-épidemiologicheskoĭ sluzhby v Latvii.