Text ( visual ) : unmediated Autonomy in education / edited by Walter Berka, Jan de Groof and Hilde Penneman. -- 1998. -- The Hague : Kluwer Law International , c2000. -- xiv, 451 p. : ill. ; 25 cm. -- (Yearbook of the European Association for Education Law and Policy ; vol. 3). -- ISBN 9041113118 ; (BA47300806) ; https://ci.nii.ac.jp/ncid/BA47300806 Author Heading(s): Groof, Jan de ; Penneman, Hilde ; Berka, Walter