- Publication venue
- Veenman
- Publication date
- 01/01/1972
- Field of study
- Publication venue
- Publication date
- 01/01/1987
- Field of study
- Publication venue
- Publication date
- 01/01/1986
- Field of study
- Publication venue
- Publication date
- 01/01/1986
- Field of study
- Publication venue
- Veenman
- Publication date
- 01/01/1965
- Field of study
- Publication venue
- Publication date
- 01/01/1979
- Field of study
- Publication venue
- Publication date
- 01/01/1980
- Field of study
- Publication venue
- Publication date
- 01/01/1979
- Field of study