- document
- Kubera, S. (author) report 1971
- document
- Kubera, S. (author) report 1971
- document
- Nibbering, J.J.W. (author), Lalleman, A.W. (author) report 1971
- document
- Nibbering, J.J.W. (author), Lalleman, A.W. (author) report 1970
- document
- Nibbering, J.J.W. (author) report 1970
- document
- report 1970
- document
- Nibbering, J.J.W. (author) report 1970
- document
- van Katwijk, P.A. (author) report 1970
- document
- van Katwijk, P.A. (author) report 1970
- document
- van den Blink, W.P. (author), Nibbering, J.J.W. (author) report 1969
- document
- Nibbering, J.J.W. (author) report 1969
- document
- van Katwijk, P.A. (author), Scholte, H.G. (author), Soejadi, F.X.P. (author) report 1969
- document
- Nibbering, J.J.W. (author) report 1969
- document
- van Katwijk, P.A. (author), Vugts, J. (author) report 1968
- document
- Jaeger, H.E. (author), Nibbering, J.J.W. (author) report 1968
- document
- report 1968
- document
- van Katwijk, P.A. (author) report 1968
- document
- Nibbering, J.J.W. (author) report 1968
- document
- Nibbering, J.J.W. (author) report 1968
- document
- Jaeger, H.E. (author), van Katwijk, P.A. (author) report 1968