- document
- report 1972
- document
- report 1972
- document
- Onishi, Yasuo (author) report 1972
- document
- report 1972
- document
- Lamboley, Gilbert (author) report 1971
- document
- Aage, Christiaan (author) report 1971
- document
- Oosterveld, M.W.C. (author) report 1971
- document
- report 1971
- document
- Haux, G. (author) report 1971
- document
- report 1971
- document
- Dirkzwager, J.M. (author) report
- document
- Carrier, G.F. (author) report
- document
- report 1970
- document
- Lazet, A. (author) report
- document
- Lehman, Günther (author) report
- document
- Band, Lavis (author) report
- document
- Chapman, F.A. (author) report
- document
- Schreuder, J.W. (author) report
- document
- Cragin, J.Q. (author) report 1970
- document
- report 1970