Dhondt, Jean
[Author];
Scufflaire, Andrée
[Author];
Bovesse, J.
[Author];
Dumont, M.-E
[Author];
Hélin, Etienne
[Author];
Petit, R.
[Author];
Van Derveeghde, Denise
[Author];
Prevenier, Walter
[Author];
Piérard, C.
[Author];
Danhieux, L.
[Author];
Closset, C.
[Author];
Tits-Dieuaide, M.J
[Author];
Verhelst, J.
[Author];
Vermeulen, U.
[Author];
Hannes, J.
[Author];
Van Eenoo, Romain
[Author]