الإتاحة: https://doi.org/10.14736/kyb-2020-2-0323Testhttps://kramerius.lib.cas.cz/view/uuid:9cdf307c-cfe3-4f9d-a331-5ffa0bfd38c9Test
الإتاحة: https://cdk.lib.cas.cz/client/handle/uuid:9cdf307c-cfe3-4f9d-a331-5ffa0bfd38c9Test