Authors: Bellon, Karel Leopold --- Huby, Joseph --- Roelandts, K. --- Post, Regnerus Richardus --- Vergote, J. --- et al. Van Windekens, Albert-Joris --- Spae, J. J. --- Nailis, C. --- Lavachery, Henri --- Lambrechts, P. --- Hofinger, Marcel --- Houben, J.J. --- Heinisch, P. --- Duchesne-Guillemin, Jacques --- Beukers, Clement --- Cools, J.
Year: 1950 Publisher: Utrecht Brussel Uitgeverij Het Spectrum