Estes, William K. <br/><br/>
Classification and Cognition 
Estes, William K. 
 -  Oxford University Press  1994 
 - On-campus e-Book by ebrary under Digital Library Program of Higher Education Commission (HEC) of Pakistan 
<br/><br/><label>ISBN: </label>9780195360882     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology