00283nam a2200121 a 450000500170000002000150001708200200003210000060005211000240005824500240008226000360010630000190014220251203090446.0  a0387963111  a516.35,bD, ari  d_  aSilverman, Jospeh H  aArithmetic geometry  aNew YorkbSpringer-Verlagc1986  axiv,353p, 22cm