
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1951
1830 (original); 1967 (model)
1951
1951
2000-100 BCE
1951
1951
1951
1952
1952
1952
1952
1951
1951
1955; 1830
1951
1938 and 1951
1952
1952
1952
1952
1951
1839 (original); circa 1988 (replica)
4000-2001 BCE
1903 (original); 1982 (model)
1990-95
1951
circa 1952
1962-05
1952
1951
1960-1979
1951
1952
1970-1900
1952
30 CE
30 CE
2686-2613 BCE
circa 1952
1859; 1986
1952
1952
1952
1952
2000-1350
2000-1350
2000-1350
2000-1350