
Prototypes of chemical detectors, including palladium transmodulators and a coulometric electron capture detector, made by James Lovelock
1975
1975
circa 1980
1988
1966
1960-1969
1981
1955-1965
circa 1980s
1981
circa 2000
1970
1971
1980-1989
1960-1969
1971
1946-1969
1930-1937
1939
1960-1969
1948-1950
1972