00329nam a2200121Ia 4500008004100000020001400041082001600055100001500071245002900086260004500115300001700160650003000177171129s9999||||xx |||||||||||||| ||und||  a340263911  a572bAB-ALG  aAbbott, P. 0aAlgebrac/ by  P. Abbott  aSevenoars :bTeach Yourself Books,c1971  a303p.; 19cm.  aAlgebra and number theory