- Cambridge: Harvard University Press 
 - 1553 
<br/><br/> BK  Early Philosophy; language, pictures and logic 
<br/><br/><label>ISBN: </label>192/PEA/L 
<br/><br/><label>Standard No.: </label>Pears, David Francis 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BK
<br/><br/><label>Dewey Class. No.: </label> /