Multiple pdf's in one book
Hello everyone.
I have a smaller mobile phone from Samsung. My screen is rather small, so I am using some software to convert my pdf file into more readable format. But I cannot add my converted pdf file into a book, because it already has pdf format in there. It can only replace pdf for pdf.
Well, I still want to use the original pdf on my pc's screen. I need both.
Can anyone advise how to solve it?
Thank you.
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