00337nam a2200121Ia 4500008004100000020001800041082001900059100002100078245005200099260003000151300002200181650001200203171129s9999||||xx |||||||||||||| ||und||  a9788181282781  a512.72bJON-EL  aJones, Gareth A. 0aElementary number theoryc/ by  Gareth A. Jones  aLondon :bSpringer,c2009  axiv, 301p.; 23cm.  aAlgebra