While not a PDF, you can scan chapters for personal use. Italian public libraries and school libraries often lend copies. Scanning a few chapters for personal study falls under fair use (but distributing the scan is not).
The "Matematica Blu 2.0 Volume 5 PDF" is an invaluable resource for: matematica blu 2.0 volume 5 pdf
Il manuale si distingue per un approccio rigoroso ma fortemente orientato alla realtà. La struttura del testo è concepita per mostrare costantemente il legame profondo tra le formule teoriche, i fenomeni fisici e i problemi di applicazione quotidiana. While not a PDF, you can scan chapters for personal use
Have you found a legal way to access this textbook? Share your tips in the comments below (for educational purposes only). While not a PDF