This was the first execution to be carried out since 1863.
Several studies have been carried out in Germany since the 1970s.
No death sentence had been carried out since the 1940s.
Mining has been carried out here since the last third of the 12th century.
Major restoration work was carried out after 1870, around 1908 and again since 1958.
Much research on children's explanations of scientific events has been carried out since the 1970s.
Founded in 1955, it has been carried out every year since 1959.
California has not carried out a death sentence since 1967.
Goldmining has been carried out since the late 19th century.
Studies of pause patterns in speech have been carried out since the 1950s.
