Silk, John. <br/><br/>
Statistical concepts in geography / 
John Silk. 
 - Boston,  Allen and Unwin  1979 
 - xv, 276 p.   ill.  25 cm. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0049100653 
<br/><br/><label>LCCN: </label>7840957  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography--Statistical methods.