Language evolution :  critical concepts in linguistics / 
edited by W. Tecumseh Fitch and Gesche Westphal Fitch. 
 - Milton Park, Abingdon, Oxon :  Routledge,  2012. 
 - 4 v. :  ill. ;  25 cm. 
<br/><br/> 'Volume I-IV.' 
<br/><br/>Includes bibliographical references and index. 
<br/><br/> Historical sources --  Conceptions of protolanguage --  The evolution of speech --  The modern era: Darwin meets Chomsky.  vol. 1.  vol. 2.  vol. 3.  vol. 4. 
<br/><br/><label>ISBN: </label>9780415679152 (set : alk. paper)  RM 3622.54 041567915X (set : alk. paper) 9780415682886 (vol. 1) 9780415682893 (vol. 2) 9780415682909 (vol. 3) 9780415682916 (vol. 4) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages--Origin.<br/>Human evolution.<br/>Linguistics.