Fitz-enz, Jac _ ROI of human capital Measuring the Economic Value of Employee Performance - America Amacom 2009 - xxiii,312p. PB 24cm. ISBN: 9780814413326 Subjects--Personal Names: _ Subjects--Uniform Titles: 1.Human Capital 2.Productivity Accounting 3. Labour Economics Dewey Class. No.: 658.15226 / FIT