Correlations between chronic bronchitis and upper respiratory tract infections in a representative sample of the population of the City of lódź

Rozniecki, J.; Polańska, Z.; Laciak, J.

Polski Tygodnik Lekarski 30(42): 1733-1735

1975


ISSN/ISBN: 0032-3756
PMID: 1181564
Document Number: 92501

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