Salesmanship V6, Number 4: Devoted To Success In Selling (1917) is a book written by D. M. Barrett that focuses on the art of selling. The book is part of a series of publications that aim to provide readers with practical advice and tips on how to succeed in the field of sales. The book covers a range of topics, including the psychology of selling, the importance of building relationships with customers, and the role of advertising and marketing...