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1كتاب
الإتاحة: https://doi.org/10.1016/b978-0-323-85662-1.00006-9Test
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2كتاب
الإتاحة: https://doi.org/10.1016/b978-0-323-85662-1.00027-6Test
https://apiTest.elsevier.com/content/article/PII:B9780323856621000276?httpAccept=text/xml
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