1. 什么是数据挖掘? O.B. THE UNIVERSITY BAY GASPORT THURSDAY, DECEMBER 6, 2007 THIS GROUND, TREES PLANTED BY THE NATIONAL WORLDWIDE ORCHARD ASSOCIATION SELL YOUR BOOKS PLAY THE MONEY TREE DOUBLE YOUR CASH* YOU SELL BOOKS, WE PLANT TREES RECEIVE UP TO 50% CASH BACK WE BUY BACK EVERY TEXTBOOK REMOTE BUYBACK LOCATION NAISMITH HALL UNIVERSITY BOOK SHOP UBS 1116 WEST 23RD STREET 785-749-5206 KUBOOKS.COM SEE STORE FOR EXTENDED HOURS Please visit BuildAForest.com to vote for a forest planted in your school's name. *Play the instore money tree game for a chance at double cash back when you sell your books. For each used (recycled) book transaction, Validis/Nebraska Book Company will make a donation to the Arbor Day Foundation. Total donation amount not to exceed $100,000. See store for official "Sell a Book, Build a Forest" details.