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Og Mandino
11/12/1923 - 02/09/1996Og Mandino was an American author best known for the self-help book 'The Greatest Salesman in the World'. He has written several other successful books such as 'The Greatest Secret in the World' and 'The Greatest Miracle in the World'. He served as the president of Success Unlimited magazine until 1976 and his books have sold millions of copies worldwide.United States
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