TY  - RPRT
TI  - Three simple ventilators. An assessment.
AU  - J M Collis
PY  - 1967
DO  - 10.1111/j.1365-2044.1967.tb10157.x
UR  - https://pubmed.ncbi.nlm.nih.gov/5233972/
ID  - 5233972
ER  -