Sprung from some common source :  investigations into the prehistory of languages / 
edited by Sydney M.Lamb and E.Douglas Mitchell. 
 - Stanford :  Stanford University Press,  1991. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0804718970 
<br/><br/><label>LCCN: </label>90464995 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages -- Origin--Language and languages -- Origin
<br/><br/><label>LC Class. No.: </label>P116  / Spr 1991