Willemse, Isabel. <br/><br/>
Statistical methods and calculation skills / 
by Isabel Willemse. 
 - third  edition. 
 - Cape Town :  Juta,  2009. 
 - vii, 272  pages :  illustration ;  cm. 
<br/><br/><label>ISBN: </label>9780702177538 :  $39.13 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics.<br/>Statistics.