TY  - RPRT
TI  - A recording bag-in-a-box spirometer.
AU  - G Cumming
PY  - 1966
DO  - 10.1152/jappl.1966.21.1.291
UR  - https://pubmed.ncbi.nlm.nih.gov/5903927/
ID  - 5903927
ER  -