Cite
MLA Citation
Chris J. McSweeney. “Mechanical Respirators.” BMJ, vol. 1, no. 4072, 1939, p. 134. http://access.bl.uk/ark:/81055/vdc_100141637250.0x000040
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Chris J. McSweeney. “Mechanical Respirators.” BMJ, vol. 1, no. 4072, 1939, p. 134. http://access.bl.uk/ark:/81055/vdc_100141637250.0x000040