
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
1930
circa 1930
1931
1931
1931
1930
circa 1930
1931
1955; 1830
1930
2000-100 BCE
1930-1931
1934
1903 (original); 1982 (model)
1930 (replica); 1834 (original)
1839 (original); circa 1988 (replica)
1801-1892 (prepared); 1946 (element replaced)
1930
1990-96
1931
1930
1931
1930
4000-2001 BCE
1930
1934
1990-95
1930s
circa 1930; 1920
1931
before 1930
1730-1760 (original); 1931-1939 (replica)
1834-1836
1930s
2800 BCE
circa 1931
circa 3000 BCE
1930
1798 (original); 1977 (model)
circa 1930
1930s (1888)
2050-1750 BCE
1930s
1936
1960-1979
1879 (1956)
700 BCE; 1931
1930s