edited by R.E.J. Lewis, E.D. Tagg ; [organized by IFIP TC 3, Working Group 3.2 of IFIP Technical Committee 3, Education, International Federation for Information Processing (IFIP)]
D. Hilbert and W. Ackermann ; translated from the German by Lewis M. Hammond, George G. Leckie, F. Steinhardt ; edited and with notes by Robert E. Luce