TY  - BOOK
AU  - Lightfoot,David
TI  - How to set parameters: arguments form language change 
SN  - 0262121530
PY  - 1991///
CY  - Cambridge, Mass.
PB  - MIT Press
KW  - Language acquisition
KW  - Linguistic change
KW  - Grammar, Comparative and general
N1  - 'A Bradford book.'; Includes bibliographical references (p. 199-210) and index
ER  -