by DE LA ROSETTE, J. J. M. C. H, RUIJGROK, M. C. M, JEUKEN, J. M. G, KARTHAUS, H. F. M, DEBRYUNE, F. M. J
Published in Urology (Ridgewood, N.J.) (01.12.1993)

by Ruijgrok, E.C.M
Published in Ecological economics (01.12.2001)

by Ruijgrok, E.C.M.
Published in Journal of cultural heritage (01.07.2006)