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| Utgitt
| Cambridge, Mass. : MIT Press , c1993
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| Omfang
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| Opplysninger
| "...has its roots in a working conference convened at Ringberg Castle in Germany by the Max Planck Institute for Human Development and Education (Berlin) and the Max Planck Institute for Psychological Research (Munich)...." - Innledingen
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| Emner
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| ISBN
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