A few months back Springer offered all these books plus a lot more for free download. I'm pretty sure I downloaded all of them. Here is a magnet link if you sti

A few months back Springer offered all these books plus a lot more for free download. I'm pretty sure I downloaded all of them. Here is a magnet link if you still want them. It's 15.3Gib. magnet:?xt=urn:btih:3e2a5671298ce12028899cedcef12c9514a656e4&dn=SpringerBooks