1915
1915-1918
1934
1916
1914-1918
1916-1917
1918
1917
1955; 1830
1919
1917-1918
2000-100 BCE
1914
1914-1916
1915-1917
1990-96
1772 (original); 1919 (model)
circa 1919
4000-2001 BCE
1801-1892 (prepared); 1946 (element replaced)
1903 (original); 1982 (model)
circa 1915