أرسل هذا في رسالة قصيرة: Elemental classification of the tusks of dugong (Dugong dugong) by HH-XRF analysis and comparison with other species

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   / //    | ||__    |  ' ||  | / \ || | |  \ || 
  / //__   | ||__    | .  ||  | \_/ || | |__/ || 
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