00337nam a2200121 a 450000500170000002000150001708200200003210000220005224500720007425000110014626000390015730000190019620251203092006.0  a0201578891  a512.72,bD, ros  aRosen, Kenneth H.  aElementary number theory and its applications, Kennth H. Rosen, eng  a3rd ed  aNew York, Addison-Wesley, USc1992  axv,544p.c22cm