Deutsche Gesellschaft fuer Zerstoerungsfreie Pruefung e.V., Berlin (Germany, F.R.); vp; 1983; vp; Jubilee meeting: 50 years of DGZfP. Lecture meeting on non-destructive testing: Past, present, future; Berlin (Germany, F.R.); 8-12 May 1983; Available from Fachinformationszentrum Energie, Physik, Mathematik, Karlsruhe (Germany, F.R.); Published in summary form only.