[Effect of a decrease in the density of an inspired gas mixture on external respiration].
D006371:Helium; D006801:Humans; D010100:Oxygen; D012119:Respiration
D006371:Helium; D010100:Oxygen
O vliianii snizheniia plotnosti vdykhaemoĭ gazovoĭ smesi na vneshnee dykhanie.