: If the main site is down, look for official "mirrors" to access the database.
It hosts millions of e-books and research papers, which can be read online or downloaded primarily in PDF format. en bookfi net electronic library
However, the "en bookfi net electronic library" has faced constant legal pressure. Major publishing houses like Elsevier, Wiley, and HarperCollins have repeatedly filed DMCA (Digital Millennium Copyright Act) takedown requests. This has led to the domain frequently switching hosts. While en.bookfi.net remains a primary access point, mirror sites like bookfi.org and bookfi.net regularly appear and disappear. : If the main site is down, look