المؤلفون: Campion, J. S.
الوصول الحر: https://www.europeana.eu/item/08711/https___www_biodiversitylibrary_org_item_59175?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest
المؤلفون: Campion, Pierre
الوصول الحر: https://www.europeana.eu/item/2048050/Athena_Plus_ProvidedCHO_BiblioNet_15342?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest