- document
- Goudappel, H.M. (author) public lecture 1973
- document
- report 1973
- document
- book 1973
- document
- Hamnett, S.L. (author) report 1973
- document
- report 1973
- document
- Crince Le Roy, R. (author) public lecture 1972
- document
- Barth, E.M. (author) public lecture 1972
- document
- Lambooy, J.G. (author) public lecture 1972
- document
- book 1972
- document
- report 1972
- document
- Grünfeld, F. (author) public lecture 1971
- document
- De Vries Reilingh, H.D. (author) public lecture 1971
- document
- Wegner, J.G. (author) book 1971
- document
- Buit, J. (author) public lecture 1971
- document
- Hoekveld, G.A. (author) public lecture 1971
- document
- Bak, L. (author) public lecture 1971
- document
- Heinemeijer, W.F. (author) public lecture 1971
- document
- report 1971
- document
- report 1971
- document
- Van Dam, F. (author) book 1971