Publications of the Bernard van Leer Foundation
Bernard van Leer Foundation , Pergamon Press
written for the Bernard van Leer Foundation by Service de psychologie génétique de l'Universitè libre de Bruxelles ... [et al.]
Pergamon Press , Bernard van Leer Foundation 1979, c1977 1st English ed Publications of the Bernard van Leer Foundation
Available at 4 libraries
written for the Bernard van Leer Foundation by Gerard Pantin
Bernard van Leer Foundation , Pergamon Press 1979 Publications of the Bernard van Leer Foundation
Available at 1 libraries