by Jacqueline Froelich
Wal-Mart has announced plans to build as many as 40 mid-sized grocery stores and "express" marts this year.
The world's largest retailer hopes that the strategy will help it compete with burgeoning dollar-store chains and drugstores — and move into smaller shopping districts. And that has some smaller merchants worried.
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Wal-Mart Hopes Smaller Is Bigger
