Submerged repeater amplifier, 1967
1967
1967
(1962); 1982
2000-100 BCE
1967
1966
1903 (original); 1982 (model)
1966
1990-96
1967
1966
1967
1830 (original); 1967 (model)
1966
1966
1967
4000-2001 BCE
1966
1966
1966
1970-1900
1966
10000-5000 BCE
1967
1966
1967
1966
1967
1966
1966
1966
1966
1967
1967
1917
1966
1966
1966
8500-2000 BCE
1967
5000-500 BCE
1966
1966
1967
1966
1967
2686-2613 BCE
1966
2000 BCE
1966
8500-2000 BCE