
Phillip's Economic Computer
1949
1949
1949
1945
1942
1950-1952
1951
1938
1940
1938
2000-100 BCE
1945
1947
1940
1942
1946
1938-1940
1940
1950
1938
1938
1951
circa 1950
1950
1948
1940-1945
1940-1949
1942
circa 1950
1950-1951
circa 1938
1938
1939-1945
1943
1952
1952
1952
1952
1951
1940
1938
1947
1938
1948
1938
1938
1940
1950
1955; 1830
1951
1945