PCs AT THE POS Personal computers at the front end open the door to savings and innovation at H-E-B a science at Dominick's FREQUENT SHOPPER An electronic card-based program builds momentum at Gregerson's -- and discounts for customers ELECTRONIC SHELF TAGS Sending prices to the shelf via wireless technology drives labor savings and price integrity at Edwards CUSTOMER SELF-SCANNING After good results testing the system in the express lane, Price Chopper plans more tweaking in 1995
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