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Issue with a pdf ebook

Hi ,
I order "Network security assessment third edition , early release ", in pdf format.
All the figures in the pdf book don't display properly .
To be more precise i tried to do a copy and past to show you the display , but it doesn't work.
I open the book with differents pdf readers , i have the same issue.
I download it several times but always the same .

Sorry for my bad english .
best regards .

Mario Gaydu
Paris , France .

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