TY  - BOOK
AU  - Halliday,M.A.K.
TI  - Learning how to mean: explorations in the development of language 
T2  - Explorations in language study
SN  - 0713118725 :
AV  - P118 .H3
U1  - 401.930 83 HAL 
PY  - 1975///
CY  - London
PB  - Edward Arnold
KW  - Language acquisition
KW  - Semiotics
N1  - Bibliography: p. 159-164
ER  -