Lopker <br/><br/>
Pictures of Personality Guide to the four human natures 
John Lopker 
 - 1 
 - London				  Typology   2000 
 - 200 
<br/><br/><label>ISBN: </label>970581009					 
<br/><br/><label>Dewey Class. No.: </label>610	  / LOP