TY  - RPRT
TI  - Multi-mode switchable breathing systems.
AU  - G P Ramayya
PY  - 1985
DO  - 10.1111/j.1365-2044.1985.tb10968.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4025786/
ID  - 4025786
ER  -