Hart, William L. <br/><br/>Mathematics of investment William L. Hart  - Fifth Edition  - Lexington, MA:  D.C. Heath Publishing,  1980  - Various paging;  21 cm. <br/><br/><label>ISBN: </label>9710811770 <br/><br/><label>LC Class. No.: </label>HG4515.3  / H326 1980