For me, both internet and Library are useful to us. So strongly believe the Internet can't replace libraries totally. Library as a system provide venues for creativity, learning, and community...
I think that yes internet (digital books) can replace books being much more practical especially due to the evolution of screens (screens become more and more soft, portable, foldable and therefore more practical). However, personally I will not be able to read a complete book or a novel on a screen, I would prefer to feel the book in my hands.
yes. now-days internet represent the most common source for knowledge , for example student or scholars can find books, papers,and journals in several website.so they don't need to go to library.