2018-03-272018-03-27Unknownhttp://hdl.handle.net/2152.3/7358Time of Useful Function Presentation slide: labeled Estimated Lethal Dose for a 1-3 Minute Exposure and lists 4 gases, ppm and percentage.Time of Useful FunctionPresentation slidesEstimated Lethal Dose for a 1-3 Minute ExposurePresentation slidesDr. James G. GaumeresearchSpace Medicinegas exposure