Number Theory by Helmut Hasse

Smith - Contract Theory - New paperback or softback - X555z

Burn - A Pathway Into Number Theory - New paperback or softback - X555z

Guy - Unsolved Problems in Number Theory - New paperback or softback - - X555z

Murty - Problems in Analytic Number Theory - New paperback or softback - X555z

Stillwell - Elements of Number Theory - New paperback or softback - X555z

Everest - An Introduction to Number Theory - New paperback or softback - X555z

Rosen - Number Theory in Function Fields - New paperback or softback - - X555z