1646812
9781580628136
Stephan Schiffman is America's most renowned sales trainer. He is the author of numerous best-selling sales books. Mr. Schiffman is also the president of DEI Management Group, Inc., and has trained more than 300,000 salespeople. He lives in New York CitySchiffman, Stephan is the author of 'Stephan Schiffman's Telesales America's #1 Corporate Sales Trainer Shows You How to Boost Your Phone Sales' with ISBN 9781580628136 and ISBN 1580628133.
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