TY  - BOOK
AU  - Singleton, David
AU  - Ryan, Lisa 
TI  - Language acquisition: The age factor (2nd edition)
SN  - 1853597570
U1  - 401.93 
PY  - 2004///
CY  - Clevedon ; Buffalo
PB  - Albee Publishing Company, LLC
KW  - Language acquisition
KW  - Age factors
N1  - 000846; CH 846
ER  -