50th anniversary of the first ascent of Everest.
John B
JB
West
D000531:Altitude; D000532:Altitude Sickness / Q000266:history* / Q000503:physiopathology; D049673:History, 20th Century; D006801:Humans; D009051:Mountaineering / Q000266:history* / Q000502:physiology; D009390:Nepal; D018609:Tibet