| Year | Position | Institution |
| 1953 | Professor Of Basteriology | University Of California Berkeley |
| 1953 | Professor Of Bacteriology | University Of California |
| 1968 | University of California, Berkeley | |
| 1971 | University Of California Berkeley | |
| 1972 | Institut Pasteur | |
| 1973 | Professor Of Microbiology | Institut Pasteur |
| 1974 | Professor Of Microbiology | Institut Pasteur |
| 1975 | Institut Pasteur | |
| 1976 | Institut Pasteur | |
| 1977 | Institut Pasteur | |
| 1978 | Institut Pasteur | |
| 1979 | Institut Pasteur |
| Year | Role | Course |
| 1953 | Instructor | Physiology 1953 |
| 1971 | Consultant | Marine Ecology 1971 |
| 1972 | Consultant | Marine Ecology 1972 |
| 1973 | Consultant | Marine Ecology 1973 |
| 1974 | Consultant | Marine Ecology 1974 |
| 1975 | Consultant | Training Program In Microbial Ecology 1975 |
| 1976 | Consultant | Training Program In Microbial Ecology 1976 |
| 1977 | Consultant | Research Program In Microbial Ecology 1977 |
| 1978 | Consultant | Research Program In Microbial Ecology 1978 |
| 1979 | Faculty/Staff/Lecturer | Microbial Ecology 1979 |
| Year | Subject | Role |
| 1953 | Independent Investigators |
| Year | Location |
| 1972 | paris |
| 1973 | paris |
| 1974 | paris |
| 1975 | paris |
| 1976 | paris |
| 1977 | paris |
| 1978 | paris |
| 1979 | paris |
| Year | Start Date | End Date | Subject | Role |
| 1968 | - | - | Friday Evening Lecturer |