Ruhlen,Merritt <br/><br/>
On the origin of languages  studies in linguistice taxonomy 
Merritt Ruhlen 
 - Stanford  Stanford O.P 1994 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Comparative Linguistics
<br/><br/><label>LC Class. No.: </label>P 143 .R84