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![Cover for Ron Stone · The Real Value of Training: Measuring and Analyzing Business Outcomes and the Quality of ROI (Hardcover Book) [Ed edition] (2011)](https://imusic.b-cdn.net/images/item/original/977/9780071759977.jpg?ron-stone-2011-the-real-value-of-training-measuring-and-analyzing-business-outcomes-and-the-quality-of-roi-hardcover-book&class=scaled&v=1647908303)