Proceedings of the Colloquium held in Amsterdam, 1996, to Honour C.J. Ruijgh on the Occasion of his Retirement. Contributions by: L. Basset, Y. Duhoux, A.M. v. Erp Taalman Kip, B. Jacquinod, I.J.F. de Jong, A. Morpurgo Davies, A. Rijksbaron, C.M.J. Sicking, S.R. Slings, I. Sluiter, F.M.J. Waanders, G.C. Wakker, P. Wathelet.