Authors: Theunis, F. --- Henau, Ernest --- de Haes, Paul --- Van Bavel, T. --- Moris, M. --- et al. Vanneste, J. --- Rubbens, A. --- Fransen, P. --- Claerhout, I. --- Deckers, W. --- Vercruysse, J. --- Mertens, H.
Year: 1969 Publisher: Antwerpen Patmos