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edited by Heino Widdel and David L. Post ; associate editors, Jeffrey D. Grossman and Jan Walraven
Plenum Press c1992 Defense research series v. 3
Available at 9 libraries
Heino Widdel
Beltz 1980 Theorie und Praxis der Schulpsychologie Bd. 25 , Beltz Forschungsberichte
Available at 1 libraries