المؤلفون: Latvakoski, N.
الوصول الحر: https://www.europeana.eu/item/2021008/M011_436328?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest
الوصول الحر: https://www.europeana.eu/item/2021008/_knp_161079?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest