The development of concrete thought
Subtitle: a manual including measurement procedures and descriptive analyses
By: Eberhard Schröder ... [et al.].
Series: Materialien aus der Bildungsforschung -- nr. 67
Publisher: Max-Planck-Institut für Bildungsforschung
Published: 2000
Place of publication: Berlin
Language: eng
Number of pages: 95
Notes: Includes bibliographical references.