Ruhlen, Merritt <br/><br/>
On the origin of  languages : Studies in Linguistics Taxonomy. 

 - Stanford  Stanford University Press  1994 
 - xiv,342p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pv
<br/><br/><label>Dewey Class. No.: </label>Pv  / M4