1950
1955
1951
1954
1953
1948-1953
1950-1953
circa 1955
1947
circa 1950
May 1953
1948
1954-1955
1950-1952
1951-1953
1955; 1830
2000-100 BCE
1938 and 1951
1949
1950-1951
circa 1953
1990-96