The mature market : a strategic marketing guide to America's fastest growing population segment / Robert S. Menchin. Menchin, Robert S. Marketing United States Management. Older consumers United States. Consumer behavior United States. 658.802 MEM Includes bibliographical references and index. Chicago, Ill. : Probus Pub., c1989. c1989. 1989 Text xvi, 265 p. : eng United States United States. United States.