Watkins, Charley Marketing, sales ad customer services understanding the theory and practice of selling through service / [Book] : Charley Watkins. - New Delhi : A. I. T. B. S Publishers & Distributors, 2002. - x, 348 p. ; 26 cm. Includes index All. ISBN: 8174731482 Subjects--Topical Terms: Sales--management.Selling. Dewey Class. No.: 658.81