Lieberman, Philip. <br/><br/>
On the origins of language :  an introduction to the evolution of human speech / 
by Philip Lieberman. 
 - New York, N.Y. :  Macmillan,  [1975]. 
 - viii, 196 p. :  ill. ;  24 cm. 
 - The Macmillan Series in Physical Anthropology. .
<br/><br/>Includes bibliographical references : (p. 183-189) and index. 
<br/><br/>Cognitive and communicative factors underlying language--The comparative method in the study of communication : Darwin and Negus--Basic acoustics. 
<br/><br/><label>ISBN: </label>0023706902 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages--Origin.