00305nam a22000857a 4500020001800000082001700018100006400035245008300099260003700182  a9781558602717  a005.74 FRE/Q  aJohann Christoph Freytag, David Maier, and Gottfried Vossen  aQuery Processing for Advanced Database Systemsb:For Advanced Database Systems  a1994bMorgan Kaufmann Publishers