- 1969Associate Professor Of Biology
- 1970Professor Of Biology
- 1971Professor Of Biology
- 1971[position unknown]
- 1970[position unknown]
- 2000[position unknown]
- 1971[position unknown]
- 2001[position unknown]
- 2000[position unknown]
- 1970[position unknown]
- 1970[position unknown]
- 2003[position unknown]
- 2007[position unknown]