المؤلفون: Georg Zimmermann, Marek Wieczorek
الوصول الحر: http://europeana.eu/portal/record/2026124/Partage_Plus_ProvidedCHO_Pictures_bank_eu__ICIMSS__62622.htmlTest
الوصول الحر: http://europeana.eu/portal/record/2026124/Partage_Plus_ProvidedCHO_Pictures_bank_eu__ICIMSS__62616.htmlTest
الوصول الحر: http://europeana.eu/portal/record/2026124/Partage_Plus_ProvidedCHO_Pictures_bank_eu__ICIMSS__62607.htmlTest