TY  - BOOK
AU  - Bickerton,Derek
TI  - Language & species
SN  - 0226046109
PY  - 1990///
CY  - Chicago, Ill.
PB  - University of Chicago Press
KW  - Language and languages
KW  - Origin
KW  - Human evolution
N1  - Includes bibliographical references (p. 273-290) and index
ER  -