
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
1930
circa 1930
1932
1955; 1830
1931
1931
1931
1930
circa 1930
1934
1931
1930
2000-100 BCE
1930-1931
Before 1932
1932
1932
1930
1990-96
1931
1930
1839 (original); circa 1988 (replica)
1930
1930 (replica); 1834 (original)
1801-1892 (prepared); 1946 (element replaced)
1934
1931
1903 (original); 1982 (model)
1930-1932
1930-1932
1930-1932
Before 1932
4000-2001 BCE
1930
1990-95
circa 1930; 1920
1930s
1930
1931
before 1930
1730-1760 (original); 1931-1939 (replica)
1834-1836
1932
1930s
2800 BCE
1930s (1888)
circa 1931
circa 3000 BCE