1975
1980
(1962); 1982
1979
1976
1976-1979
circa 1975
2000-100 BCE
1977
1990-96
1978
1986 (replica); 1501-1600 (original)
circa 1980
1975-1978
1978-1980
4000-2001 BCE
1903 (original); 1982 (model)
1970 and post 1989
2686-2613 BCE
1975 (original)