The debit system of marketing life and health insurance / Robert A. Marshall, Eli A. Zubay. Marshall, Robert A. (Robert Allen), 1942- Zubay, Eli A., joint author. Educational Foundation. Industrial life insurance. Health insurance. HG9251 .M37 658.89 MAD Includes bibliographical references and index. Englewood Cliffs, N.J. : Published for Educational Foundation, inc., Georgia State University, Atlanta, by Prentice-Hall, 1975. 1975. 1975 Text xv, 152 p. ; eng