TY  - RPRT
TI  - [Chronic bronchitis in young persons].
AU  - I S Petrukhin
AU  - N I Bazhenova
AU  - L A Vasiutkova
PY  - 1983
UR  - https://pubmed.ncbi.nlm.nih.gov/6225195/
ID  - 6225195
ER  -