TY  - RPRT
TI  - The variable effect of smoking on pulmonary function.
AU  - A S Kuperman
AU  - J B Riker
PY  - 1973
DO  - 10.1378/chest.63.5.655
UR  - https://pubmed.ncbi.nlm.nih.gov/4703618/
ID  - 4703618
ER  -