David F N <br/><br/>
Elementary statistical exercises 
David F N; Pearson E S 
 -  Cambridge Univ.Press           1963 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics
<br/><br/><label>Dewey Class. No.: </label>B28, vK1