Penguin book
1948
1948
1946
1943
1948
1945
1946-1950
1946
1942
1947
1950
1950
circa 1950
1942
2000-100 BCE
1943
1944-1945
1944
1945
1938 and 1951
1947
1946-1948
1948
1942
1946
1941-1950
circa 1950
1946
1955; 1830
1948
1945
1949
1950
1949
1946
1950
1949
1950
1949
1947
circa 1950
circa 1950
1945-1948
1946-1948
1990-96
1943-1945
1948
1949
1947-1948
circa 1945
1950