TY  - RPRT
TI  - A self-contained respirator.
AU  - E K HILLARD
PY  - 1958
DO  - 10.1111/j.1365-2044.1958.tb08107.x
UR  - https://pubmed.ncbi.nlm.nih.gov/13545558/
ID  - 13545558
ER  -