- document
- Konter, J.L.M. (author) report 1982
- document
- Konter, J.L.M. (author) report 1982
- document
- Konter, J.L.M. (author) report 1981
- document
- Konter, J.L.M. (author) report 1981
- document
- Konter, J.L.M. (author) report 1981
- document
- Konter, J.L.M. (author) report 1981
- document
- Konter, J.L.M. (author) report 1981
- document
- Konter, J.L.M. (author) report 1980