000 00270nam a2200097Ia 4500
008 220816s9999||||xx |||||||||||||| ||und||
020 _a721612555
245 0 _aNumber theory
_cAndrews, George E.,
260 _aPhiladelphia,
_bSaunders,
_c1971
300 _ax, 259 p.
_billus.
_c25 cm.
999 _c326
_d326