HALLETT, D J <br/><br/>
Quantitative Techniques : A Practice & Revision Manual. 

 - Eastleigh  D. P. Publications.  1983 
 - v, 508p. 
<br/><br/><label>ISBN: </label>0 905435 35 4 
<br/><br/><label>Dewey Class. No.: </label>658.002 8