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San Francisco-based Potlatch Corp. said it will move its headquarters to Spokane, Wash., in a decision the forest-products company said will reduce its administrative expenses. . . . Los Angeles-based Smart & Final, the nation’s largest warehouse grocery chain, will open a research and development store in North Hollywood on Saturday at which the company will test new products, concepts and merchandising before rolling them out to its 173 stores. . . . Mountain View-based Intuit Inc. began offering a software program that allows computer users to bank online and pay bills directly via the Internet. . . . Los Angeles-based CB Commercial Real Estate Services Group Inc. said it signed a definitive agreement to merge with privately held Koll Real Estate Services of Newport Beach.