المؤلفون: Wang, Quan, Birod, Kerstin, Angioni, Carlo Federico, Grösch, Sabine, Geppert, Tim, Schneider, Petra, Rupp, Matthias, Schneider, Gisbert
الوصول الحر: https://www.europeana.eu/item/2048441/item_2JUSOESW2ZKZIMY4TJSP77C6RMIB5NFX?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest
المؤلفون: Wang, Quan, Bolhuis, Jantina Elizabeth, Rothkopf, Constantin A., Kolling, Thorsten, Knopf, Monika, Triesch, Jochen
الوصول الحر: https://www.europeana.eu/item/2048441/item_HNTKG7VWYWFF7723FRZJTAPAX4QIFRBF?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest