
Phillip's Economic Computer
1949
1949
1949
1945
1942
1951
1938
1940
1938
1945
1948
1946
1943
1948
2000-100 BCE
1945
1947
1940
1942
1946
1941-1950
1938-1940
1940
1950
1938
1938
1951
circa 1950
1950
1948
1951
1940-1945
1950
1940-1949
1942
circa 1950
1950-1951
circa 1942
circa 1938
1951
1939
1946-1948
1938 and 1951
1944-1945
1946
1940
1938
1947
1938
1948
1938