- 1922[position unknown]
- 1928Associate Nematologist
- 1922[position unknown]
- 1979[position unknown]
- 1980[position unknown]
- 1981[position unknown]
- 1926Technologist And Nematologist
- 1927Technologist And Nematologist
- 1928Technologist And Nematologist
- 1991[position unknown]
- 1979[position unknown]
- 1902[position unknown]
- 1903Physiologist And Algologist
- 1979[position unknown]
- 1980[position unknown]
- 1981[position unknown]
- 1979[position unknown]
- 1969[position unknown]
- 1970[position unknown]
- 1971[position unknown]
- 1968[position unknown]
- 2000[position unknown]
- 1999[position unknown]
- 1926Bureau Of Entomology
- 1979[position unknown]
- 1902[position unknown]
- 1903Physiologist
- 2000[position unknown]
- 1899Pathologist
- 1910Pathologist In Charge Of Laboratory Of Plant Pathology
- 1903In Charge Of Plant-Breeding