Penguin book
1948
1948
1946
1948
1953
1948-1953
circa 1953
1951
1946-1950
1950-1953
1950-1952
1953
1946
1947
1950
1951
1950
1953
1949
1951
1954
circa 1950
1951-1953
1950
1951
1950-1953
2000-100 BCE
May 1953
1951-1953
1938 and 1951
1947
1946-1948
1948
1946
circa 1950
1953
1946
1955; 1830
1948
1950-1951
1951
1949
1950
1951
1949
1954
1946
1950
1949
1947
circa 1950