الإتاحة: https://doi.org/10.3205/zma000673Testhttp://nbn-resolving.de/urn:nbn:de:0183-zma0006734Testhttp://www.egms.de/en/journals/zma/2010-27/zma000673.shtmlTest
الإتاحة: https://doi.org/10.1093/jac/40.6.847Testhttp://jac.oxfordjournals.org/cgi/content/short/40/6/847Test
الإتاحة: http://hdl.handle.net/11379/31561Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f5f1c6bfe3acef4003a460e83e0678bTesthttps://doi.org/10.1086/597468Test
الإتاحة: http://hdl.handle.net/11379/165921Test
الإتاحة: http://hdl.handle.net/11379/47885Test
الإتاحة: http://hdl.handle.net/11379/47889Test
الإتاحة: http://hdl.handle.net/11379/47893Test
الإتاحة: http://hdl.handle.net/11379/47891Test
الإتاحة: http://hdl.handle.net/11379/47894Test