Springer made a bunch of books available for free, these were the direct linksspringer-free-maths-books.md These links no longer work. Springer have pulled the free plug. Graduate texts in mathematics duplicates = multiple editions A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen A Course in Arithmetic, Jean-Pierre Serre A Course in Computational Algebraic Number T
