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2. Curriculumentwicklung in den Modellkindergaerten des Landes Rheinland-Pfalz;Arbeitsgruppe Vorschulerziehung,1979
3. Lokale Umwelten and familiale Sozialisation: Konzeptualisierung and Befunde;Bargel,1982
4. Economic evaluation of early intervention: A critical review;Barnett,1986
5. The ecology of human development;Bronfenbrenner,1979