Coppel W A Number theory An introduction to mathematics. - 2 - London Springer 2009 - xiii,610p. cm. - Universitext . ISBN: 4621.8419999999996 Standard No.: 100141 Source: 2108, 12/10/2009, New India Book Agency Textual Subjects--Topical Terms: Mathematics Dewey Class. No.: B13, P9