D Bratovanov. Show Affiliations »
Abstract
Entities: Disease
Mesh: See more » BulgariaCommunicable Diseases/epidemiologyEpidemiologic MethodsHumansMeasles/epidemiologyPeriodicitySeasons
Year: 1970 PMID: 5519107
Source DB: PubMed Journal: Zh Mikrobiol Epidemiol Immunobiol ISSN: 0372-9311