المؤلفون: S. Heijmans Jz.
URL الوصول: http://europeana.eu/portal/record/9200142/BibliographicResource_2000069551847.html
URL الوصول: http://europeana.eu/portal/record/9200142/BibliographicResource_2000069551850.html
URL الوصول: https://www.europeana.eu/item/9200142/BibliographicResource_3000135568820?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCa
URL الوصول: https://www.europeana.eu/item/9200142/BibliographicResource_3000135568659?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCa