HEASTER Donald D <br/><br/>
Studies of portfolio behaviour 
HEASTER Donald D; TOBIN James 
 - New York  wiley           1967 
 - ix,258  cm. 
 - cowles foundation monograph.20 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X65, K7;1