00318nam a2200121 a 450000500170000002000150001708200170003210000180004924500500006726000320011730000230014970000240017220251203091524.0  a007Y662150  a001.64,bcer  aCeri, Stefano  aDistributed databases: principles and systems  aNew York: McGraw-Hillc1984  axii, 393p.c22 cm.  aPelagatti, Giuseppe