Stillwell John Elements of number theory - New York Springer 2003 - xii, 254p cm. - Undergraduate Texts in Mathematics . Bibliography: P 239-44 ISBN: 9788181283948 250.75 Source: INDXL/RTL/072/10-11, 26/09/2011, Index International General Book Subjects--Topical Terms: Economics Dewey Class. No.: B13, P3