[On the effect of negative air ions on external breathing].
D000328:Adult; D000388:Air; D000390:Air Ionization; D002245:Carbon Dioxide / Q000032:analysis; D006801:Humans; D007477:Ions; D012119:Respiration; D012129:Respiratory Function Tests
D007477:Ions; D002245:Carbon Dioxide
Uber die Wirkung negativer Luftionen auf die äussere Atmung.