TY  - RPRT
TI  - [Methodological problems in the study of bronchial obstruction].
AU  - I P Zamotaev
AU  - N A Magazanik
AU  - L N Maksimova
PY  - 1974
UR  - https://pubmed.ncbi.nlm.nih.gov/4428400/
ID  - 4428400
ER  -