Burt,J.E& Barber, G.M <br/><br/>
Elementary statistics for geographers 

 - Edition 2 
 -  The Guilford Press  1996 
 - 640 pages 
<br/><br/><label>ISBN: </label>898629993 
<br/><br/><label>Dewey Class. No.: </label>B910.21el