[BASIC PROBLEMS IN EPIDEMIOLOGICAL GEOGRAPHY. II. THE CONCEPT OF NOSOLOGICAL AREAS].
D004813:Epidemiology; D005843:Geography; D006801:Humans; D014586:USSR
EPIDEMIOLOGY; GEOGRAPHY; USSR
OSNOVNYE PROBLEMY 'EPIDEMIOLOGICHESKO I GEORGRAFFII. II. PONIATIE O NOZOAREALAKH.