THIRKETTLE, G. L. <br/><br/>
Wheldon's Business Statistics and Statistical Method 

 - 9th Ed. 
 - London,  MacDonald,  1981. 
 - ix, 278p.: ill.; figure, graph, map, table.  Index.  22cm. 
<br/><br/><label>ISBN: </label>0 7121 2325 3 
<br/><br/><label>Dewey Class. No.: </label>519. 024 THI