Roger Fritz
Roger Fritz (1928–2011) was an American management consultant and the author of over 63 self-help and management development books, including The Power of a Positive Attitude and What Managers Need to Know.
Roger Fritz (1928–2011) was an American management consultant and the author of over 63 self-help and management development books, including The Power of a Positive Attitude and What Managers Need to Know.
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