TY  - BOOK
AU  - Lightfoot, David
AU  - David Lightfoot
TI  - How new languages emerge
SN  - 0521676290
U1  - Circ. 417.7 L724h 2006 
PY  - 2006///
CY  - New York : 
PB  - Cambridge University Press, 
KW  - 1. Linguistic change.
KW  - 2. Language acquisition.
KW  - 3. Language and languages–Variation
N1  - Includes bibliographical references & index

ER  -