RT Book
T1 The changing role of the professional educator = Le rôle changeant de l'enseignant = Der Rollenwandel des Lehrers
T2 Paedagogica Europaea
JF Paedagogica Europaea
LA English
LA German
PP Amsterdam u.a.
PB Elsevier
YR 1970
UL https://ixtheo.de/Record/1111204209