
Phillip's Economic Computer
1949
1949
1949
1945
1942
1940
1945
1947
1940
1946
1948
1940-1945
1940-1949
circa 1950
1943
1940
1947
1945
1948
1946
1943
1948
1949
1948
1949
1946
1946
1944
circa 1942
1946-1948
1944-1945
1946
1940
2000-100 BCE
1948
1940
1942
1941-1950
1950
1950
1955; 1830
circa 1950
1950
1942
1940-1944
1938 and 1951
1950
1940
1943
circa 1940
1942-1945