00277nam a2200109Ia 450000500170000000800410001708200180005810000160007624500310009226000340012330000100015720260205040555.0260111s9999||||xx |||||||||||||| ||und||  a796.52  B413P  aBell,J.H.B. 0aProgress in Mountaineering  aLondonbOliver and Boydc1950  a424p.