Franz Lemmermeyer - Mathematics - 2000 - 487 pages
This book is about the development of reciprocity laws, starting from conjectures of Euler and discussing the contributions of Legendre, Gauss, Dirichlet, Jacobi, and ...
Harvey Cohn - Mathematics - 1985 - 213 pages
A broad introduction to quadratic forms, modular functions, interpretation by rings and ideals, class fields by radicals and more. 1985 ed.