
Phillip's Economic Computer
1949
1949
1952-3
1951
1830 (original); 1967 (model)
1948-1950
1949
1950
1948
1947
1947
1951
1947
1947
1950
1951
circa 1950
1950
1951
1950
1948
1948
1950
1949
1951
1951
1948
1955; 1830
1950
1951
1951
1948
1951
1938 and 1951
2000-100 BCE
1948
1949
circa 1950
1950-1951
1949
1950
1903 (original); 1982 (model)
1948
1948
1839 (original); circa 1988 (replica)
1950
1949
1947-1948
1951
circa 1950
circa 1950