Dickinson, Gordon Cawood. <br/><br/>
Statistical mapping and the presentation of statistics / 
by G.C. Dickinson. 
 - London:  E. Arnold ,  1963. 
 - 160 p. ;  illus., maps.:  26 cm. 
<br/><br/>'Sources of statistics': p. 137-159. 
<br/><br/><label>ISBN: </label>071315117X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Maps, statistical<br/>Statistics--Graphic methods