Cite
MLA Citation
Unknown. “"Black-out" and Ventilation.” BMJ, vol. 1, no. 4130, 1940, p. 360. http://access.bl.uk/ark:/81055/vdc_100180428666.0x00004e
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Unknown. “"Black-out" and Ventilation.” BMJ, vol. 1, no. 4130, 1940, p. 360. http://access.bl.uk/ark:/81055/vdc_100180428666.0x00004e