Beckwith, Harry, 1949- Selling the invisible : a field guide to modern marketing / Harry Beckwith. - First Trade Edition. - Warner Books, - xxii, 247 pages ; 19 cm. ISBN: 9780446672313 LCCN: 96016774 Subjects--Topical Terms: Service industries--Marketing.Marketing. Dewey Class. No.: 658.8 / HAR