00465nam a22001457a 4500008004100000020001500041040005500056080001800111245005500129260004900184300001500233490003500248650002200283653001400305230516b        |||||||| |||| 00| 0 eng d  a0080285899  aNational Science LibrarycNational Science Library  aD 681.3bM4.4  aDatabase performance c/ Pergamon Infotech Limited  aEngland: bPergamon Infotech Limited, c1984  aix, 341p.   aState of the art report v12:4  aComputer science   aComputer