Rotative Compound Beam Engine, 1881
1968-1971
1968-1971
(1962); 1982
1968
1970
1967-1971
1970
1971
1970
1972
1971
1975
1969
1968
circa 1969
1975
1966-1970
1969
1973
2000-100 BCE
1967
1967-1972
1968
1967
1969
circa 1975
circa 1972
1975
1968
1969
1969
1968
1971
1970-1972
1990-96
1966
circa 1968
1969-1970
1973-1974
1966
1969
1966-1970
1974
1974
1966
1966
1975
About 1970
1974
circa 1975
1968