Year | Subject | Role |
1960 | Research Assistants | |
1961 | Research Assistants | |
1969 | Independent | |
1970 | Independent | |
1971 | Independent | |
1972 | Independent | |
1973 | Independent | |
1975 | Independent | |
1976 | Independent Investigators | |
1977 | Independent | |
1978 | Independent | |
1979 | Independent | |
1980 | Independent | |
1981 | Independent | |
1987 | Library Readers | |
1988 | Library Readers | |
1994 | Library Readers | |
1995 | Library Readers | |
1996 | Library Readers | |
1999 | Library Readers | |
2002 | Summer Investigators | |
2002 | Research Fellows | |
2003 | Visiting Principal Investigators |
Year | Location |
1969 | philadelphia |
1994 | canada |
1996 | canada |
2002 | new brunswick, canada |
2002 | canada |
2003 | canada |