Elementary methods ...
A concrete introdu ...
The book of number ...
Unsolved problems ...
A classical introd ...
Fearless symmetry ...
Number theory : an ...
Elementary number ...
An introduction to ...
Number theory II : ...
Number theory I : ...
Number theory III ...
Number theory IV : ...
Number theory with ...
Groups acting on h ...
Arithmetic algebra ...
The theory of numb ...
The discrepancy me ...