The Dow Jones-Irwin guide to modern portfolio theory / Robert L. Hagin. Guide to modern portfolio theory. Hagin, Robert. Dow Jones-Irwin. Portfolio management. HG4529.5 .H33 332.6 19 HAD Includes index. Bibliography: p. 285-305. Homewood, Ill. : Dow-Jones-Irwin, c1979. c1979. 1979 Text x, 353 p. : eng