[A study on the problem of labour hygiene and labour protection at high altitude (author's transl)].
D000531:Altitude; D000532:Altitude Sickness / Q000503:physiopathology; D001794:Blood Pressure; D006332:Cardiomegaly / Q000209:etiology; D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology*; D008297:Male; D009787:Occupational Medicine; D005082:Physical Exertion