TY  - BOOK
AU  - Snowdon,Charles T.
AU  - Hausberger,Martine
TI  - Social influences on vocal development
SN  - 0521495261 :
U1  - 591.59 
PY  - 1997///
CY  - New York
PB  - Cambridge University Press
KW  - Sound production by animals
KW  - Birdsongs
KW  - Language acquisition
N1  - Includes bibliographical references and index
ER  -