Universal grammar  15 essays 
Edward L. Keenan 
 - London  Croom Helm  1987 
 - 499 p. : ill.; 23 cm. 
<br/><br/> Reprint. originally published: Washington, D.C. Georgetown University Press, 1975 
<br/><br/><label>ISBN: </label>0709931093 
<br/><br/><label>LCCN: </label>86-8848 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Grammar, Comparative and general