This is absolutely impossible. The library clearly stipulates that taking books out of the library without permission is regarded as theft. Which do you think is more important than your reputation and conscience? And the library can issue invoices for copying.

Of course, the high cost of copying in the National Library is unreasonable, but you don't have to do this. Think about it. You have to shake the book twice under the eyes of the guards, and it's summer. You can't cover the book with so little clothes!