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HARVARD Citation
Pörksen, B. (eds.) (2015) Schlüsselwerke des Konstruktivismus. [Online]. Wiesbaden, Germany : Springer VS. Available from: http://access.bl.uk/ark:/81055/vdc_100077547256.0x000001
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Pörksen, B. (eds.) (2015) Schlüsselwerke des Konstruktivismus. [Online]. Wiesbaden, Germany : Springer VS. Available from: http://access.bl.uk/ark:/81055/vdc_100077547256.0x000001