المؤلفون: Koivisto, V
الوصول الحر: https://www.europeana.eu/item/2021008/M011_423438?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest
الوصول الحر: https://www.europeana.eu/item/2021008/_knp_154293?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest