
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
1932
1931
1931
1931
1933
1931
1955; 1830
1932
1933
2000-100 BCE
Before 1932
1932
1934
1903 (original); 1982 (model)
1839 (original); circa 1988 (replica)
1933
1801-1892 (prepared); 1946 (element replaced)
1932-1933
1933
1933
1990-96
1931
1931
Before 1932
4000-2001 BCE
1934
1990-95
1933-09-11
1931
1730-1760 (original); 1931-1939 (replica)
1834-1836
1933
2800 BCE
1932
circa 1931
1933
circa 3000 BCE
1798 (original); 1977 (model)
1933
2050-1750 BCE
1936
circa 1932
circa 1932
1960-1979
1879 (1956)
700 BCE; 1931
1933
1932